<PAGE>   1

As filed with the Securities and Exchange Commission on May 28, 1999
                                                          Registration No. 333-

================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                                    FORM S-8
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                  CROSSWALK.COM, INC (FORMERLY AKA DIDAX INC.)
            --------------------------------------------------------
             (Exact name of registrant as specified in its charter)

<TABLE>
<S>                                                   <C>
             Delaware                                 54-1831588
             --------                                 ----------
             (State or other jurisdiction of          (I.R.S. Employer
             of incorporation or organization)        Identification No.)
</TABLE>

                                     Address
                                     -------
                             4206 F Technology Court
                               Chantilly, VA 20151
                                 (703) 968-4808
          (Address and telephone number of principal executive offices)

            CROSSWALK.COM, INC. AKA DIDAX INC. 1998 STOCK OPTION PLAN
            ---------------------------------------------------------
                              (Full title of plan)

                                Willam M. Parker
                             4206 F Technology Court
                    Chantilly, VA 20151 (703)968-4808 Ext. 13
            (Name, address and telephone number of agent for service)

                                   Copies to:
                            Charles J. Rennert, Esq.
                          Berman Wolfe & Rennert, P.A.
                          NationsBank Tower, 35th Floor
             100 Southeast Second Street, Miami, Florida 33131-2130
                                  305-577-4171

                         CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
===================================================================================================================
                                                    Proposed Maximum          Proposed
Title of Securities                Amount to         Offering Price       Maximum Aggregate          Amount of
to be Registered                 be Registered        Per Share(1)        Offering Price (1)      Registration Fee
----------------                 -------------        ------------        ------------------      ----------------
<S>                              <C>                  <C>                 <C>                     <C>
Common Stock
   par value $.01 per share         800,000              $11.25               $9,000,000             $2,502(1)
</TABLE>

----------------
(1) Estimated solely for the purpose of calculating the registration fee on the
basis of the average of the high and low prices of the Registrant's Common Stock
as reported on the Nasdaq SmallCap Market on May 26, 1999, the latest
practicable date prior to the filing of this Registration Statement.

<PAGE>   2

                                     PREFACE

In April 1998, the Board of Directors adopted, and the stockholders approved the
Company's 1998 Stock Option Plan (the "Option Plan"). The Board of Directors in
February 1999 adopted and the stockholders in May 1999 approved among other
things, increasing by 400,000, the number of shares issuable under the Option
Plan. The purpose of the Option Plan is to advance the interests of the Company
by providing an opportunity to its directors, employees and consultants,
including ministry partners, to purchase shares of the Company's Common Stock.
By encouraging stock ownership, the Company seeks to attract, retain and
motivate directors, employees and consultants. The Option Plan provides for the
grant of (i) incentive stock options ("Incentive Options") as described in
Section 422A of the Internal Revenue Code of 1986, as amended (the "Code"); and
(ii) nonqualified stock options ("Nonqualified Options," and, together with the
Incentive Options, the "Options"). The Option Plan is administered by the Board
of Directors, or at its discretion, by a committee which is appointed by the
Board to perform such function. Under the terms of the Option Plan, the exercise
price for Incentive Options may not be less than the fair market value of the
underlying stock at the time the Incentive Option is granted.

The purpose of this Registration Statement is to provide for the registration of
shares of the Registrant's Common Stock, par value $.01 per share (the "Common
Stock), issuable upon the exercise of the stock options under the Plan.

                                     PART I

              INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

*ITEM 1. Plan Information.

*ITEM 2. Registrant Information and Employee Plan Annual Information.

------------------
* Information required by Part I to be contained in the Section 10(a) prospectus
is omitted from this Registration Statement in accordance with Rule 428 under
the Securities Act of 1933 and the Note to Part I of Form S-8.


2
<PAGE>   3

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3. Incorporation of Certain Documents by Reference.

       The following documents, filed by the Registrant with the Securities and
Exchange Commission (the "Commission"), are incorporated by reference in this
Registration Statement:

(1)    The description of the Registrant's Common Stock, par value $.01 per
       share, contained in the Registrant's Form SB-2, declared effective by the
       Commission on September 24, 1997 and Post-Effective Amendment No. 2 to
       this Form SB-2 declared effective by the Commission on May 4, 1999
       (Registration No. 333-25937).

(2)    The Registrant's Annual Report on Form 10-KSB for the fiscal year ended
       December 31, 1998, filed with the Commission on March 22, 1999.

(3)    The Registrant's Definitive Proxy Statement on Schedule 14A as filed with
       the Commission on March 26, 1999 (Registration No. 000-22847).

(4)    The Registrant's Quarterly Report on Form 10-QSB for the quarter ended
       March 31, 1999, filed with the Commission on May 14, 1999.

(5)    The Registrant's Quarterly Report on Form 10-QSB for the quarter ended
       September 30, 1998, filed with the Commission on November 10, 1998.

(6)    The Registrant's Quarterly Report on Form 10-QSB for the quarter ended
       June 30, 1998, filed with the Commission on August 14, 1998.

(7)    The Registrant's Quarterly Report on Form 10-QSB for the quarter ended
       March 31, 1998, filed with the Commission on May 15, 1998.

       In addition, all reports and other documents subsequently filed by the
Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act
prior to the filing of a post-effective amendment which indicates that all
securities have been sold or which deregisters all securities then remaining
unsold shall be deemed to be incorporated by reference herein and made a part
hereof from the date of filing of such documents. Any statements contained in a
document incorporated by reference herein shall be deemed to be modified or
superseded for purposes hereof to the extent that a statement contained herein
(or in any other subsequently filed document which also is incorporated by
reference herein) modifies or supersedes such statement. Any statement so
modified or superseded shall not be deemed to constitute a part of this
Registration Statement except as so modified or superseded.


3
<PAGE>   4

ITEM 4. Description of Securities.

       Not applicable.

ITEM 5. Interests of Named Experts and Counsel.

       Not applicable.

ITEM 6. Indemnification of Directors and Officers.

       To the fullest extent permitted by Delaware statutory or decisional law,
as amended or interpreted, no director of this Corporation shall be personally
liable to the Corporation or its stockholders for monetary damages for breach of
fiduciary duty as a director. This does not affect the availability of equitable
remedies for breach of fiduciary duties.

       The Corporation shall, to the fullest extent legally permissible,
indemnify (fully or, if not possible, partially) each of its directors and
officers, and persons who serve at its request as directors or officers of
another organization in which it owns shares or of which it is a creditor,
against all liabilities (including expenses) imposed upon or reasonably incurred
by him in connection with any action, suit or other proceeding, civil or
criminal (including investigations, audits, the activities of, or service upon
special committees of the board) in which he may be involved or with which he
may be threatened, while in office or thereafter, by reason of his acts or
omissions as such director or officer, unless in any proceeding he shall be
finally adjudged not to have acted in good faith in the reasonable belief that
his action was in the best interest of the Corporation; provided, however, that
such indemnification shall not cover liabilities in connection with any matter
which shall be disposed of through a compromise payment by such director or
officer, pursuant to a consent decree or otherwise, unless such compromise shall
be approved as in the best interest of the Corporation, after notice that it
involved such indemnification, (a) by a vote of the directors in which no
interested director participates, or (b) by a vote or the written approval of
the holders of a majority of the outstanding stock at the time having the right
to vote for directors, not counting as outstanding any stock owned by any
interested director or officer. Such indemnification may include payment by the
Corporation of expenses incurred in defending a civil or criminal action or
proceeding in advance of the final disposition of such action or proceeding,
upon receipt of an undertaking by the person indemnified to repay such payment
if he shall be adjudicated to be not entitled to indemnification under these
provisions. The rights of indemnification hereby provided shall not be exclusive
of or affect other rights to which any director or officer may be entitled. As
used in this paragraph, the terms "director" and "officer" include their
respective heirs, executors and administrators, and an "interested" director or
officer is one against whom as such the proceedings in question or another
proceeding on the same or similar grounds is then pending.

ITEM 7. Exemption from Registration Claimed.

       Not applicable.


4
<PAGE>   5

ITEM 8. Exhibits.

       See Index to Exhibits.

ITEM 9. Undertakings.

       (a) The undersigned Registrant hereby undertakes:

              (1) To file, during any period in which offers or sales are being
              made, a post-effective amendment to this Registration Statement:

                     (i) To include any prospectus required by Section 10(a)(3)
                     of the Securities Act of 1933;

                     (ii) To reflect in the prospectus any facts or events
                     arising after the effective date of this Registration
                     Statement (or the most recent post-effective amendment
                     thereof) which, individually or in the aggregate, represent
                     a fundamental change in the information set forth in this
                     Registration Statement;

                     (iii) To include any material information with respect to
                     the plan of distribution not previously disclosed in this
                     Registration Statement or any material change to such
                     information in this Registration Statement;

              provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) above
              do not apply if the information required to be included in a
              post-effective amendment by those paragraphs is contained in
              periodic reports filed by the Registrant pursuant to Section 13 or
              Section 15(d) of the Exchange Act that are incorporated by
              reference in this Registration Statement.

              (2) That, for the purpose of determining any liability under the
              Securities Act of 1933, each such post-effective amendment shall
              be deemed to be a new registration statement relating to the
              securities offered therein, and the offering of such securities at
              that time shall be deemed to be the initial bona fide offering
              thereof.

              (3) To remove from registration by means of a post-effective
              amendment any of the securities being registered which remain
              unsold at the termination of the offering.

       (b) The Registrant hereby undertakes that, for purposes of determining
       any liability under the Securities Act of 1933, each filing of the
       Registrant's annual report pursuant to Section 13(a) or Section 15(d) of
       the Exchange Act (and each filing of the Plan's annual report pursuant to
       Section 15(d) of the Exchange Act) that is incorporated by reference in
       this Registration Statement shall be deemed to be a new registration
       statement relating to the


5
<PAGE>   6

       securities offered therein, and the offering of such securities at that
       time shall be deemed to be the initial bona fide offering thereof.

       (c) Insofar as indemnification for liabilities arising under the
       Securities Act of 1933 may be permitted to directors, officers and
       controlling persons of the Registrant pursuant to the foregoing
       provisions, or otherwise, the Registrant has been advised that in the
       opinion of the SEC such indemnification is against public policy as
       expressed in the Act and is, therefore, unenforceable. In the event that
       a claim for indemnification against such liabilities (other than the
       payment by the Registrant of expenses incurred or paid by a director,
       officer or controlling person of the Registrant in the successful defense
       of any action, suit or proceeding) is asserted by such director, officer
       or controlling person in connection with the securities being registered,
       the Registrant will, unless in the opinion of its counsel the matter has
       been settled by controlling precedent, submit to a court of appropriate
       jurisdiction the question whether such indemnification by it is against
       public policy as expressed in the Act and will be governed by the final
       adjudication of such issue.

                                   SIGNATURES

       Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
the requirements for filing on Form S-8 and has duly caused this Registration
Statement on Form S-8 to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Chantilly, State of Virginia, on May 26, 1999.

                                        CROSSWALK.COM, INC.

                                        By: /s/ William M. Parker
                                            ---------------------
                                        William M. Parker
                                        Chief Executive Officer and President

                                POWER OF ATTORNEY

       KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints William M. Parker, or in his absence, Gary A.
Struzik, his true and lawful attorney-in-fact and agent, each with full power of
substitution and resubstitution, for him and in his name, place and stead, in
any and all capacities, to sign any and all amendments, including post-effective
amendments, to this Registration Statement, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission granting unto said attorney-in-fact and agent
full power and authority to do and perform each and every act and thing
requisite and necessary to be done, as fully to all intents and purposes as he
might or could do in person, hereby ratifying and conforming all that each said
attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

       In accordance with the requirements of the Securities Act of 1933, as
amended, this


6
<PAGE>   7

Registration Statement has been signed herein by the following persons in
the capacities and on the dates indicated.

<TABLE>
<S>                                          <C>
May  26, 1999                                By:/s/ WILLIAM M. PARKER
                                             ------------------------
                                             William M. Parker,
                                             Chief Executive Officer and President

May  26, 1999                                By:/s/ GARY A. STRUZIK
                                             ----------------------
                                             Gary A. Struzik,
                                             Chief Financial Officer and Secretary,
                                             and Principal Financial and Chief
                                             Accounting Officer

May  26, 1999                                By:/s/ JAMES G. BUICK
                                             ---------------------
                                             James G. Buick,
                                             Chairman of the Board of Directors

May  26, 1999                                By:/s/ ROBERT C. VARNEY, PH.D.
                                             ------------------------------
                                             Robert C. Varney, Ph.D.,
                                             Vice-Chairman of the Board of Directors

May  26, 1999                                By:/s/ DANE B. WEST
                                             -------------------
                                             Dane B. West,
                                             Vice President Business Development and
                                             Sales and director

May  26, 1999                                By:/s/ WILLIAM H. BOWERS
                                             ------------------------
                                             William H. Bowers,
                                             Chief Technical Officer and director

May  26, 1999                                By:/s/ BRUCE E. EDGINGTON
                                             -------------------------
                                             Bruce E. Edgington, director

May  26, 1999                                By:/s/ JOHN J. MEINDL, JR.
                                             --------------------------
                                             John J. Meindl, Jr., director

May  26, 1999                                By:/s/ CLAY T. WHITEHEAD
                                             ------------------------
                                             Clay T. Whitehead, director

May  26, 1999                                By:/s/ EARL E. GJELDE
                                             ---------------------
                                             Earl E. Gjelde, director

May  26, 1999                                By:/s/ W.R. "MAX" CAREY
                                             -----------------------
                                             W.R. "Max" Carey, director
</TABLE>


7
<PAGE>   8

                                INDEX TO EXHIBITS

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                  DESCRIPTION
------                  -----------
<S>                     <C>
4.1*                    Certificate of Incorporation and Amendments thereto of DIDAX INC.
4.1A*                   Certificate of Correction regarding Certificate of Incorporation
4.1B                    Amendment to the Company's Certificate of Incorporation effective 5/13/99
4.2*                    Bylaws of the Registrant
4.3*                    Form of Stock Option Agreement
4.3A*                   Form of Stock Option Agreement as amended April, 6, 1998
4.4*                    Form of Certificate representing shares of Common Stock of the Registrant
5                       Opinion of Berman Wolfe & Rennert P.A.
23.1                    Consent of Berman Wolfe & Rennert P.A. (Included as part of Exhibit 5.1)
23.2                    Consent of Hoffman, Morrison & Fitzgerald P.C.
24                      Power of Attorney (included on signature page)
99.1                    1998 Stock Option Plan, as amended February 26, 1999
</TABLE>

------------
* Incorporated by reference from the Registrant's Registration Statement on Form
SB-2 (SEC File No. 333-25937) declared effective by the Securities and Exchange
Commission on September 24, 1997, and the Registrant's Definitive Proxy
Statement on Schedule 14A (SEC File No. 000-22847) filed with the Securities and
Exchange Commission on April 10, 1998.


8
[{"type": "S-8", "sequence": "1", "description": "FORM S-8", "secsgml_size_bytes": 21476}]
{"company-data": {"conformed-name": "CROSSWALK COM", "cik": "0001037599", "assigned-sic": "7371", "irs-number": "541831588", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-79663", "film-number": "99637898"}, "business-address": {"street1": "4206F TECHNOLOGY COURT", "city": "CHANTILLY", "state": "VA", "zip": "20151", "phone": "7039684808"}, "mail-address": {"street1": "4206F TECHNOLOGY COURT", "city": "CHANTILLY", "state": "VA", "zip": "20151"}, "former-company": {"former-conformed-name": "DIDAX INC", "date-changed": "19970410"}}
1

As filed with the Securities and Exchange Commission on May 28, 1999
                                                          Registration No. 333-

================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                                    FORM S-8
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                  CROSSWALK.COM, INC (FORMERLY AKA DIDAX INC.)
            --------------------------------------------------------
             (Exact name of registrant as specified in its charter)
Delaware                                 54-1831588
             --------                                 ----------
             (State or other jurisdiction of          (I.R.S. Employer
             of incorporation or organization)        Identification No.)
Address
                                     -------
                             4206 F Technology Court
                               Chantilly, VA 20151
                                 (703) 968-4808
          (Address and telephone number of principal executive offices)

            CROSSWALK.COM, INC. AKA DIDAX INC. 1998 STOCK OPTION PLAN
            ---------------------------------------------------------
                              (Full title of plan)

                                Willam M. Parker
                             4206 F Technology Court
                    Chantilly, VA 20151 (703)968-4808 Ext. 13
            (Name, address and telephone number of agent for service)

                                   Copies to:
                            Charles J. Rennert, Esq.
                          Berman Wolfe & Rennert, P.A.
                          NationsBank Tower, 35th Floor
             100 Southeast Second Street, Miami, Florida 33131-2130
                                  305-577-4171

                         CALCULATION OF REGISTRATION FEE
===================================================================================================================
                                                    Proposed Maximum          Proposed
Title of Securities                Amount to         Offering Price       Maximum Aggregate          Amount of
to be Registered                 be Registered        Per Share(1)        Offering Price (1)      Registration Fee
----------------                 -------------        ------------        ------------------      ----------------
Common Stock
   par value $.01 per share         800,000              $11.25               $9,000,000             $2,502(1)
----------------
(1) Estimated solely for the purpose of calculating the registration fee on the
basis of the average of the high and low prices of the Registrant's Common Stock
as reported on the Nasdaq SmallCap Market on May 26, 1999, the latest
practicable date prior to the filing of this Registration Statement.
2

                                     PREFACE

In April 1998, the Board of Directors adopted, and the stockholders approved the
Company's 1998 Stock Option Plan (the "Option Plan"). The Board of Directors in
February 1999 adopted and the stockholders in May 1999 approved among other
things, increasing by 400,000, the number of shares issuable under the Option
Plan. The purpose of the Option Plan is to advance the interests of the Company
by providing an opportunity to its directors, employees and consultants,
including ministry partners, to purchase shares of the Company's Common Stock.
By encouraging stock ownership, the Company seeks to attract, retain and
motivate directors, employees and consultants. The Option Plan provides for the
grant of (i) incentive stock options ("Incentive Options") as described in
Section 422A of the Internal Revenue Code of 1986, as amended (the "Code"); and
(ii) nonqualified stock options ("Nonqualified Options," and, together with the
Incentive Options, the "Options"). The Option Plan is administered by the Board
of Directors, or at its discretion, by a committee which is appointed by the
Board to perform such function. Under the terms of the Option Plan, the exercise
price for Incentive Options may not be less than the fair market value of the
underlying stock at the time the Incentive Option is granted.

The purpose of this Registration Statement is to provide for the registration of
shares of the Registrant's Common Stock, par value $.01 per share (the "Common
Stock), issuable upon the exercise of the stock options under the Plan.

                                     PART I

              INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

*ITEM 1. Plan Information.

*ITEM 2. Registrant Information and Employee Plan Annual Information.

------------------
* Information required by Part I to be contained in the Section 10(a) prospectus
is omitted from this Registration Statement in accordance with Rule 428 under
the Securities Act of 1933 and the Note to Part I of Form S-8.

2
3

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3. Incorporation of Certain Documents by Reference.

       The following documents, filed by the Registrant with the Securities and
Exchange Commission (the "Commission"), are incorporated by reference in this
Registration Statement:

(1)    The description of the Registrant's Common Stock, par value $.01 per
       share, contained in the Registrant's Form SB-2, declared effective by the
       Commission on September 24, 1997 and Post-Effective Amendment No. 2 to
       this Form SB-2 declared effective by the Commission on May 4, 1999
       (Registration No. 333-25937).

(2)    The Registrant's Annual Report on Form 10-KSB for the fiscal year ended
       December 31, 1998, filed with the Commission on March 22, 1999.

(3)    The Registrant's Definitive Proxy Statement on Schedule 14A as filed with
       the Commission on March 26, 1999 (Registration No. 000-22847).

(4)    The Registrant's Quarterly Report on Form 10-QSB for the quarter ended
       March 31, 1999, filed with the Commission on May 14, 1999.

(5)    The Registrant's Quarterly Report on Form 10-QSB for the quarter ended
       September 30, 1998, filed with the Commission on November 10, 1998.

(6)    The Registrant's Quarterly Report on Form 10-QSB for the quarter ended
       June 30, 1998, filed with the Commission on August 14, 1998.

(7)    The Registrant's Quarterly Report on Form 10-QSB for the quarter ended
       March 31, 1998, filed with the Commission on May 15, 1998.

       In addition, all reports and other documents subsequently filed by the
Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act
prior to the filing of a post-effective amendment which indicates that all
securities have been sold or which deregisters all securities then remaining
unsold shall be deemed to be incorporated by reference herein and made a part
hereof from the date of filing of such documents. Any statements contained in a
document incorporated by reference herein shall be deemed to be modified or
superseded for purposes hereof to the extent that a statement contained herein
(or in any other subsequently filed document which also is incorporated by
reference herein) modifies or supersedes such statement. Any statement so
modified or superseded shall not be deemed to constitute a part of this
Registration Statement except as so modified or superseded.

3
4

ITEM 4. Description of Securities.

       Not applicable.

ITEM 5. Interests of Named Experts and Counsel.

       Not applicable.

ITEM 6. Indemnification of Directors and Officers.

       To the fullest extent permitted by Delaware statutory or decisional law,
as amended or interpreted, no director of this Corporation shall be personally
liable to the Corporation or its stockholders for monetary damages for breach of
fiduciary duty as a director. This does not affect the availability of equitable
remedies for breach of fiduciary duties.

       The Corporation shall, to the fullest extent legally permissible,
indemnify (fully or, if not possible, partially) each of its directors and
officers, and persons who serve at its request as directors or officers of
another organization in which it owns shares or of which it is a creditor,
against all liabilities (including expenses) imposed upon or reasonably incurred
by him in connection with any action, suit or other proceeding, civil or
criminal (including investigations, audits, the activities of, or service upon
special committees of the board) in which he may be involved or with which he
may be threatened, while in office or thereafter, by reason of his acts or
omissions as such director or officer, unless in any proceeding he shall be
finally adjudged not to have acted in good faith in the reasonable belief that
his action was in the best interest of the Corporation; provided, however, that
such indemnification shall not cover liabilities in connection with any matter
which shall be disposed of through a compromise payment by such director or
officer, pursuant to a consent decree or otherwise, unless such compromise shall
be approved as in the best interest of the Corporation, after notice that it
involved such indemnification, (a) by a vote of the directors in which no
interested director participates, or (b) by a vote or the written approval of
the holders of a majority of the outstanding stock at the time having the right
to vote for directors, not counting as outstanding any stock owned by any
interested director or officer. Such indemnification may include payment by the
Corporation of expenses incurred in defending a civil or criminal action or
proceeding in advance of the final disposition of such action or proceeding,
upon receipt of an undertaking by the person indemnified to repay such payment
if he shall be adjudicated to be not entitled to indemnification under these
provisions. The rights of indemnification hereby provided shall not be exclusive
of or affect other rights to which any director or officer may be entitled. As
used in this paragraph, the terms "director" and "officer" include their
respective heirs, executors and administrators, and an "interested" director or
officer is one against whom as such the proceedings in question or another
proceeding on the same or similar grounds is then pending.

ITEM 7. Exemption from Registration Claimed.

       Not applicable.

4
5

ITEM 8. Exhibits.

       See Index to Exhibits.

ITEM 9. Undertakings.

       (a) The undersigned Registrant hereby undertakes:

              (1) To file, during any period in which offers or sales are being
              made, a post-effective amendment to this Registration Statement:

                     (i) To include any prospectus required by Section 10(a)(3)
                     of the Securities Act of 1933;

                     (ii) To reflect in the prospectus any facts or events
                     arising after the effective date of this Registration
                     Statement (or the most recent post-effective amendment
                     thereof) which, individually or in the aggregate, represent
                     a fundamental change in the information set forth in this
                     Registration Statement;

                     (iii) To include any material information with respect to
                     the plan of distribution not previously disclosed in this
                     Registration Statement or any material change to such
                     information in this Registration Statement;

              provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) above
              do not apply if the information required to be included in a
              post-effective amendment by those paragraphs is contained in
              periodic reports filed by the Registrant pursuant to Section 13 or
              Section 15(d) of the Exchange Act that are incorporated by
              reference in this Registration Statement.

              (2) That, for the purpose of determining any liability under the
              Securities Act of 1933, each such post-effective amendment shall
              be deemed to be a new registration statement relating to the
              securities offered therein, and the offering of such securities at
              that time shall be deemed to be the initial bona fide offering
              thereof.

              (3) To remove from registration by means of a post-effective
              amendment any of the securities being registered which remain
              unsold at the termination of the offering.

       (b) The Registrant hereby undertakes that, for purposes of determining
       any liability under the Securities Act of 1933, each filing of the
       Registrant's annual report pursuant to Section 13(a) or Section 15(d) of
       the Exchange Act (and each filing of the Plan's annual report pursuant to
       Section 15(d) of the Exchange Act) that is incorporated by reference in
       this Registration Statement shall be deemed to be a new registration
       statement relating to the

5
6

       securities offered therein, and the offering of such securities at that
       time shall be deemed to be the initial bona fide offering thereof.

       (c) Insofar as indemnification for liabilities arising under the
       Securities Act of 1933 may be permitted to directors, officers and
       controlling persons of the Registrant pursuant to the foregoing
       provisions, or otherwise, the Registrant has been advised that in the
       opinion of the SEC such indemnification is against public policy as
       expressed in the Act and is, therefore, unenforceable. In the event that
       a claim for indemnification against such liabilities (other than the
       payment by the Registrant of expenses incurred or paid by a director,
       officer or controlling person of the Registrant in the successful defense
       of any action, suit or proceeding) is asserted by such director, officer
       or controlling person in connection with the securities being registered,
       the Registrant will, unless in the opinion of its counsel the matter has
       been settled by controlling precedent, submit to a court of appropriate
       jurisdiction the question whether such indemnification by it is against
       public policy as expressed in the Act and will be governed by the final
       adjudication of such issue.

                                   SIGNATURES

       Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
the requirements for filing on Form S-8 and has duly caused this Registration
Statement on Form S-8 to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Chantilly, State of Virginia, on May 26, 1999.

                                        CROSSWALK.COM, INC.

                                        By: /s/ William M. Parker
                                            ---------------------
                                        William M. Parker
                                        Chief Executive Officer and President

                                POWER OF ATTORNEY

       KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints William M. Parker, or in his absence, Gary A.
Struzik, his true and lawful attorney-in-fact and agent, each with full power of
substitution and resubstitution, for him and in his name, place and stead, in
any and all capacities, to sign any and all amendments, including post-effective
amendments, to this Registration Statement, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission granting unto said attorney-in-fact and agent
full power and authority to do and perform each and every act and thing
requisite and necessary to be done, as fully to all intents and purposes as he
might or could do in person, hereby ratifying and conforming all that each said
attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

       In accordance with the requirements of the Securities Act of 1933, as
amended, this

6
7

Registration Statement has been signed herein by the following persons in
the capacities and on the dates indicated.
May  26, 1999                                By:/s/ WILLIAM M. PARKER
                                             ------------------------
                                             William M. Parker,
                                             Chief Executive Officer and President

May  26, 1999                                By:/s/ GARY A. STRUZIK
                                             ----------------------
                                             Gary A. Struzik,
                                             Chief Financial Officer and Secretary,
                                             and Principal Financial and Chief
                                             Accounting Officer

May  26, 1999                                By:/s/ JAMES G. BUICK
                                             ---------------------
                                             James G. Buick,
                                             Chairman of the Board of Directors

May  26, 1999                                By:/s/ ROBERT C. VARNEY, PH.D.
                                             ------------------------------
                                             Robert C. Varney, Ph.D.,
                                             Vice-Chairman of the Board of Directors

May  26, 1999                                By:/s/ DANE B. WEST
                                             -------------------
                                             Dane B. West,
                                             Vice President Business Development and
                                             Sales and director

May  26, 1999                                By:/s/ WILLIAM H. BOWERS
                                             ------------------------
                                             William H. Bowers,
                                             Chief Technical Officer and director

May  26, 1999                                By:/s/ BRUCE E. EDGINGTON
                                             -------------------------
                                             Bruce E. Edgington, director

May  26, 1999                                By:/s/ JOHN J. MEINDL, JR.
                                             --------------------------
                                             John J. Meindl, Jr., director

May  26, 1999                                By:/s/ CLAY T. WHITEHEAD
                                             ------------------------
                                             Clay T. Whitehead, director

May  26, 1999                                By:/s/ EARL E. GJELDE
                                             ---------------------
                                             Earl E. Gjelde, director

May  26, 1999                                By:/s/ W.R. "MAX" CAREY
                                             -----------------------
                                             W.R. "Max" Carey, director
7
8

                                INDEX TO EXHIBITS
EXHIBIT
NUMBER                  DESCRIPTION
------                  -----------
4.1*                    Certificate of Incorporation and Amendments thereto of DIDAX INC.
4.1A*                   Certificate of Correction regarding Certificate of Incorporation
4.1B                    Amendment to the Company's Certificate of Incorporation effective 5/13/99
4.2*                    Bylaws of the Registrant
4.3*                    Form of Stock Option Agreement
4.3A*                   Form of Stock Option Agreement as amended April, 6, 1998
4.4*                    Form of Certificate representing shares of Common Stock of the Registrant
5                       Opinion of Berman Wolfe & Rennert P.A.
23.1                    Consent of Berman Wolfe & Rennert P.A. (Included as part of Exhibit 5.1)
23.2                    Consent of Hoffman, Morrison & Fitzgerald P.C.
24                      Power of Attorney (included on signature page)
99.1                    1998 Stock Option Plan, as amended February 26, 1999
------------
* Incorporated by reference from the Registrant's Registration Statement on Form
SB-2 (SEC File No. 333-25937) declared effective by the Securities and Exchange
Commission on September 24, 1997, and the Registrant's Definitive Proxy
Statement on Schedule 14A (SEC File No. 000-22847) filed with the Securities and
Exchange Commission on April 10, 1998.

8