As filed with the Securities and Exchange Commission on March 30, 2001

                                                    Registration No. 333-
   ======================================================================
                     SECURITIES AND EXCHANGE COMMISSION
                           WASHINGTON, D.C. 20549
                           -----------------------
                                  FORM S-8
                           REGISTRATION STATEMENT
                                    UNDER
                         THE SECURITIES ACT OF 1933
                           -----------------------

                       CABLEVISION SYSTEMS CORPORATION
           (Exact name of registrant as specified in its charter)

                  DELAWARE                               11-3415180
   (State or other jurisdiction of Employer           (I.R.S. Employer
        incorporation or organization)               Identification No.)

                             1111 STEWART AVENUE
                          BETHPAGE, NEW YORK 11714
                  (Address of principal executive offices)

                       CABLEVISION CHOICE 401(K) PLAN
                          (Full title of each plan)

                               ROBERT S. LEMLE
                               VICE CHAIRMAN,
                        GENERAL COUNSEL AND SECRETARY
                       CABLEVISION SYSTEMS CORPORATION
                             1111 STEWART AVENUE
                          BETHPAGE, NEW YORK 11714
                               (516) 380-6230
           (Name, address including zip code and telephone number,
                 including area code, of agent for service)

                               WITH A COPY TO:

                               LAURALYN BENGEL
                            SCHIFF HARDIN & WAITE
                              6600 SEARS TOWER
                        CHICAGO, ILLINOIS 60606-6473
                               (312) 258-5670
                           -----------------------





                                                 CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
                                                                  PROPOSED             PROPOSED
                                             AMOUNT               MAXIMUM              MAXIMUM          AMOUNT OF
                                             TO BE                OFFERING             AGGREGATE       REGISTRATION
       TITLE OF SECURITIES TO BE REGISTERED  REGISTERED (1)    PRICE PER SHARE      OFFERING PRICE         FEE
       ------------------------------------  -------------    ----------------     ----------------    ------------
       <S>                                   <C>              <C>                  <C>                 <C>
       CABLEVISION CLASS A COMMON STOCK:
       Cablevision NY Group Class A Common
       Stock, par value $.01 per share
                                               5,000,000           $81.375           $406,875,000       $101,719
       Rainbow Media Group Class A Common
       Stock, par value $.01 per share

       Interests in the Plan                      (2)                (2)                 (2)               (2)

     (1)      Based upon the average of the high and low sales prices of Cablevision Class A Common Stock reported on the
              New York Stock Exchange on March 26, 2001 pursuant to Rule 457(c) and (h) of the Securities Act of 1933.  An
              aggregate of 5,000,000 shares are issuable under the Cablevision CHOICE 401(k) Savings Plan, either as
              Cablevision NY Group Class A Common Stock or Rainbow Media Group Class A Common Stock.

     (2)      In addition, pursuant to Rule 416(c) under the Securities Act of 1933, this Registration Statement also
              covers an indeterminate amount of interests to be offered or sold pursuant to the Cablevision 401(k) CHOICE
              401(k) Savings Plan for which no separate fee is required.
</TABLE>





























                                                                2





                            GENERAL INSTRUCTIONS

   E.   REGISTRATION OF ADDITIONAL SECURITIES.

        The contents of the Registration Statement on Form S-8 (File No.
   333-54346) filed by the Corporation with the Securities and Exchange
   Commission on November 9, 1992 registering its Class A Common Stock,
   par value $.01 per share, issuable pursuant to the Cablevision CHOICE
   401(k) Savings Plan are hereby incorporated by reference.

                                   PART II

             INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

        All information required in this Registration Statement not
   included in the exhibits attached hereto or set forth on the signature
   page is set forth in the Registration Statement (File No. 333-54346),
   all of which is incorporated herein by reference.

   ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

        Section 145 of Delaware General Corporation Law provides that a
   corporation may indemnify directors and officers as well as other
   employees and individuals against expenses (including attorney's
   fees), judgments, fines and amounts paid in settlement in connection
   with specified actions, suits or proceedings, whether civil, criminal,
   administrative or investigative (other than an action by or in the
   right of the corporation - a "derivative action"), if they acted in
   good faith and in a manner they reasonably believed to be in or not
   opposed to the best interests of the corporation, and, with respect to
   any criminal action or proceeding, had no reasonable cause to believe
   their conduct was unlawful.  A similar standard is applicable  in the
   case of derivative actions, except that indemnification only extends
   to expenses (including attorney's fees) incurred in connection with
   the defense or settlement of such action, and the statute requires
   court approval before there can be any indemnification where the
   person seeking indemnification has been found liable to the
   corporation.  The statute provides that it is not exclusive of other
   rights to which those seeking indemnification may be entitled under
   any by-law, agreement, vote of stockholders or disinterested directors
   or otherwise.

        The first paragraph of Article Ninth of the Corporation's Amended
   and Restated Certificate of Incorporation provides:

             The Corporation shall, to the fullest extent permitted
        by Section 145 of the General Corporation Law of the State
        of Delaware, as the same may be amended and supplemented, or
        by any successor thereto, indemnify any and all persons whom
        it shall have power to indemnify under said section from and
        against any and all of the expenses, liabilities or other
        matters referred to in or covered by said section.  Such

                                      3





        right to indemnification shall continue as to a person who
        has ceased to be a director, officer, employee or agent and
        shall inure to the benefit of the heirs, executors and
        administrators of such a person.  The indemnification
        provided for herein shall not be deemed exclusive of any
        other rights to which those seeking indemnification may be
        entitled under any By-Law, agreement, vote of stockholders
        or disinterested directors or otherwise.

        Article VIII of the Corporation's By-Laws provides:

             A.  The corporation shall indemnify each person who was
        or is made a party or is threatened to be made a party to or
        is involved in any threatened, pending or completed action,
        suit or proceeding, whether civil, criminal, administrative
        or investigative (hereinafter a "proceeding"), by reason of
        the fact that he or she, or a person of whom he or she is
        the legal representative, is or was a director or officer of
        the corporation or is or was serving at the request of the
        corporation as a director, officer, employee or agent of
        another corporation or of a partnership, joint venture,
        trust or other enterprise, including service with respect to
        employee benefit plans, whether the basis of such proceeding
        is alleged action in an official capacity as a director,
        officer, employee or agent or alleged action in any other
        capacity while serving as a director, officer, employee or
        agent, to the maximum extent authorized by the Delaware
        General Corporation Law, as the same exists or may hereafter
        be amended (but, in the case of any such amendment, only to
        the extent that such amendment permits the corporation to
        provide broader indemnification rights than said law
        permitted the corporation to provide prior to such
        amendment), against all expense, liability and loss
        (including attorney's fees, judgments, fines, ERISA excise
        taxes or penalties and amounts paid or to be paid in
        settlement) reasonably incurred by such person in connection
        with such proceeding.  Such indemnification shall continue
        as to a person who has ceased to be a director, officer,
        employee or agent and shall inure to the benefit of his or
        her heirs, executors and administrators.  The right to
        indemnification conferred in this Article shall be a
        contract right and shall include the right to be paid by the
        corporation the expenses incurred in defending any such
        proceeding in advance of its final disposition; provided
        that, if the Delaware General Corporation Law so requires,
        the payment of such expenses incurred by a director or
        officer in advance of the final disposition of a proceeding
        shall be made only upon receipt by the corporation of an
        undertaking by or on behalf of such person to repay all
        amounts so advanced if it shall ultimately be determined
        that such person is not entitled to be indemnified by the
        corporation as authorized in this Article or otherwise.

                                      4





             B.  The right to indemnification and advancement of
        expenses conferred on any person by this Article shall not
        limit the corporation from providing any other
        indemnification permitted by law nor shall it be deemed
        exclusive of any other right which any such person may have
        or hereafter acquire under any statute, provision of the
        Certificate of Incorporation, by-law agreement, vote of
        stockholders or disinterested directors or otherwise.

             C.  The corporation may purchase and maintain
        insurance, at its expense, to protect itself and any
        director, officer, employee or agent of the corporation or
        another corporation, partnership, joint venture, or other
        enterprise against any expense, liability or loss, whether
        or not the corporation would have the power to indemnify
        such person against such expense, liability or loss under
        the Delaware General Corporation Law.

        The Corporation has entered into indemnification agreements with
   certain of its officers and directors indemnifying such officers from
   and against certain expense, liabilities or other matters referred to
   in or covered by Section 145 of the Delaware General Corporation Law.
   The Corporation maintains directors' and officers' liability
   insurance.

        Section 102(b)(7) of the Delaware General Corporation Law permits
   a corporation to provide in its certificate of incorporation that a
   director of the corporation shall not be personally liable to the
   corporation or its stockholders for monetary damages for breach of
   fiduciary duty as a director, except for liability (i) for any breach
   of the director's duty of loyalty to the corporation or its
   stockholders, (ii) for acts or omissions not in good faith or which
   involve intentional misconduct or a knowing violation of law, (iii)
   for payments of unlawful dividends or unlawful stock repurchases or
   redemptions, or (iv) for any transaction from which the director
   derived an improper personal benefit.  The second paragraph of Article
   Ninth of the Corporation's Amended and Restated Certificate of
   Incorporation provides for such limitation of liability.

   ITEM 8.   EXHIBITS.

        The exhibits filed herewith or incorporated by reference herein
   are set forth in the Exhibit Index filed as part of this Registration
   Statement. The Plan Sponsor has received from the Internal Revenue
   Service a determination that the Plan is qualified under Section 401
   of the Internal Revenue Code and the Corporation will cause to be made
   all changes required by the Internal Revenue Service in order to
   continue to so qualify the Plan.





                                      5





                                 SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, the
   Corporation certifies that it has reasonable grounds to believe that
   it meets all of the requirements for filing this Registration
   Statement and has duly caused this registration statement to be signed
   on its behalf by the undersigned, thereunto duly authorized, in the
   City of Bethpage, State of New York, on this 29th day of March, 2001.

                                 CABLEVISION SYSTEMS CORPORATION



                                 By: /s/ James L. Dolan
                                     ----------------------------
                                     James L. Dolan
                                      Chief Executive Officer

        Pursuant to the requirements of the Securities Act of 1933, this
   Registration Statement has been signed by the following persons in the
   capacities and on the date indicated.  Each person whose signature
   appears below hereby authorizes William J. Bell and Robert S. Lemle,
   and either of them acting individually, with power of substitution to
   file one or more amendments, including Post-Effective Amendments, to
   this Registration Statement, which Amendments may make such changes as
   either of them deems appropriate, and each person whose signature
   appears below, individually and in each capacity stated below, hereby
   appoints William J. Bell and Robert S. Lemle, and either of them
   acting individually, with full power of substitution, as Attorney-in-
   Fact to execute his or her name and on his or her behalf to file any
   such Amendments to this Registration Statement.

<TABLE>
<CAPTION>
                             SIGNATURE                                  TITLE                           DATE
                             ---------                                  -----                           ----

             <S>                                        <C>                                     <C>
             /s/ James L. Dolan                         President, Chief Executive Officer      March 29, 2001
             --------------------------------------     (Principal Executive Officer) and
             James L. Dolan                             Director

             /s/ William J. Bell                        Vice Chairman (Principal Financial      March 29, 2001
             --------------------------------------     Officer) and Director
             William J. Bell

             /s/ Andrew B. Rosengard                    Executive Vice President, Finance and   March 29, 2001
             --------------------------------------     Controller (Principal Accounting
             Andrew B. Rosengard                        Officer)

             /s/ Charles F. Dolan                       Chairman, Chairman of the Board of      March 29, 2001
             --------------------------------------     Directors
             Charles F. Dolan



                                                                6





                             SIGNATURE                                  TITLE                           DATE
                             ---------                                  -----                           ----

             /s/ Robert S. Lemle                        Vice Chairman, General Counsel,         March 29, 2001
             --------------------------------------     Secretary and Director
             Robert S. Lemle

             /s/ Sheila A. Mahony                       Executive Vice President,               March 29, 2001
             ---------------------------------------    Communications, Government and Public
             Sheila A. Mahony                           Affairs and Director

             /s/ Thomas C. Dolan                        Senior Vice President and Chief         March 29, 2001
             ---------------------------------------    Information Officer and Director
             Thomas C. Dolan

             /s/ John Tatta                             Director                                March 29, 2001
             ---------------------------------------
             John Tatta

             /s/ Patrick F. Dolan                       Director                                March 29, 2001
             ---------------------------------------
             Patrick F. Dolan

             /s/ Charles D. Ferris                      Director                                March 29, 2001
             ---------------------------------------
             Charles D. Ferris

                                                        Director
             ---------------------------------------
             Richard H. Hochman

             /s/ Victor Oristano                        Director                                March 29, 2001
             ---------------------------------------
             Victor Oristano

             /s/ Vincent Tese                           Director                                March 29, 2001
             ---------------------------------------
             Vincent Tese

             /s/ Michael Huseby                         Director                                March 29, 2001
             ---------------------------------------
             Michael Huseby

             /s/ Daniel E. Somers                       Director                                March 29, 2001
             ---------------------------------------
             Daniel E. Somers
</TABLE>






                                                                7





        THE PLAN.  Pursuant to the requirements of the Securities Act of
   1933, the administrator of the Plan has duly caused this registration
   statement to be signed on its behalf by the undersigned, thereunto
   duly authorized, in the City of Bethpage, State of New York, on March
   29, 2001.


                                 CABLEVISION CHOICE 401(k) SAVINGS PLAN


                                 By: /s/ Martin McDonough
                                     ------------------------------------
                                      Martin McDonough
                                      Member, Administrative Committee

                                 By: /s/ Lisa Trimarchi
                                     -----------------------------------
                                      Lisa Trimarchi
                                      Member, Administrative Committee

                                 By: /s/ Frank Livoti
                                     -----------------------------------
                                      Frank Livoti
                                      Member, Administrative Committee

                                 By: /s/ Frank Golden
                                     -----------------------------------
                                      Frank Golden
                                      Member, Administrative Committee

                                 By: /s/ Raymond Andersen
                                     -----------------------------------
                                      Raymond Andersen
                                      Member, Administrative Committee

                                 By: /s/ Alan Gershowitz
                                     -----------------------------------
                                      Alan Gershowitz
                                      Member, Administrative Committee














                                      8





                                EXHIBIT INDEX

   EXHIBIT
   NUMBER         EXHIBIT
   ------         -------

     4            Amended and Restated Certificate of Incorporation of
                  the Corporation (incorporated by reference to Annex II
                  of the Proxy Statement)

    4.1           By-laws of the Corporation (incorporated by reference
                  to Exhibit 3.2 of the Corporation's Registration
                  Statement on Form S-4, dated January 20, 1998 (File
                  333-44547))

     23           Consent of KPMG LLP

     24           Power of Attorney (included on the signature page)



































                                      9
[{"type": "S-8", "sequence": "1", "filename": "0001.txt", "secsgml_size_bytes": 21436}]
{"company-data": {"conformed-name": "CABLEVISION SYSTEMS CORP /NY", "cik": "0001053112", "assigned-sic": "4841", "irs-number": "112776686", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-57924", "film-number": "1585239"}, "business-address": {"street1": "1111 STEWART AVENUE", "city": "BETHPAGE", "state": "NY", "zip": "11714", "phone": "5163806230"}, "mail-address": {"street1": "1111 STEWART AVENUE", "city": "BETHPAGE", "state": "NY", "zip": "11714"}}
As filed with the Securities and Exchange Commission on March 30, 2001

                                                    Registration No. 333-
   ======================================================================
                     SECURITIES AND EXCHANGE COMMISSION
                           WASHINGTON, D.C. 20549
                           -----------------------
                                  FORM S-8
                           REGISTRATION STATEMENT
                                    UNDER
                         THE SECURITIES ACT OF 1933
                           -----------------------

                       CABLEVISION SYSTEMS CORPORATION
           (Exact name of registrant as specified in its charter)

                  DELAWARE                               11-3415180
   (State or other jurisdiction of Employer           (I.R.S. Employer
        incorporation or organization)               Identification No.)

                             1111 STEWART AVENUE
                          BETHPAGE, NEW YORK 11714
                  (Address of principal executive offices)

                       CABLEVISION CHOICE 401(K) PLAN
                          (Full title of each plan)

                               ROBERT S. LEMLE
                               VICE CHAIRMAN,
                        GENERAL COUNSEL AND SECRETARY
                       CABLEVISION SYSTEMS CORPORATION
                             1111 STEWART AVENUE
                          BETHPAGE, NEW YORK 11714
                               (516) 380-6230
           (Name, address including zip code and telephone number,
                 including area code, of agent for service)

                               WITH A COPY TO:

                               LAURALYN BENGEL
                            SCHIFF HARDIN & WAITE
                              6600 SEARS TOWER
                        CHICAGO, ILLINOIS 60606-6473
                               (312) 258-5670
                           -----------------------

                                                 CALCULATION OF REGISTRATION FEE
PROPOSED             PROPOSED
                                             AMOUNT               MAXIMUM              MAXIMUM          AMOUNT OF
                                             TO BE                OFFERING             AGGREGATE       REGISTRATION
       TITLE OF SECURITIES TO BE REGISTERED  REGISTERED (1)    PRICE PER SHARE      OFFERING PRICE         FEE
       ------------------------------------  -------------    ----------------     ----------------    ------------
CABLEVISION CLASS A COMMON STOCK:
       Cablevision NY Group Class A Common
       Stock, par value $.01 per share
                                               5,000,000           $81.375           $406,875,000       $101,719
       Rainbow Media Group Class A Common
       Stock, par value $.01 per share

       Interests in the Plan                      (2)                (2)                 (2)               (2)

     (1)      Based upon the average of the high and low sales prices of Cablevision Class A Common Stock reported on the
              New York Stock Exchange on March 26, 2001 pursuant to Rule 457(c) and (h) of the Securities Act of 1933.  An
              aggregate of 5,000,000 shares are issuable under the Cablevision CHOICE 401(k) Savings Plan, either as
              Cablevision NY Group Class A Common Stock or Rainbow Media Group Class A Common Stock.

     (2)      In addition, pursuant to Rule 416(c) under the Securities Act of 1933, this Registration Statement also
              covers an indeterminate amount of interests to be offered or sold pursuant to the Cablevision 401(k) CHOICE
              401(k) Savings Plan for which no separate fee is required.
2

                            GENERAL INSTRUCTIONS

   E.   REGISTRATION OF ADDITIONAL SECURITIES.

        The contents of the Registration Statement on Form S-8 (File No.
   333-54346) filed by the Corporation with the Securities and Exchange
   Commission on November 9, 1992 registering its Class A Common Stock,
   par value $.01 per share, issuable pursuant to the Cablevision CHOICE
   401(k) Savings Plan are hereby incorporated by reference.

                                   PART II

             INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

        All information required in this Registration Statement not
   included in the exhibits attached hereto or set forth on the signature
   page is set forth in the Registration Statement (File No. 333-54346),
   all of which is incorporated herein by reference.

   ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

        Section 145 of Delaware General Corporation Law provides that a
   corporation may indemnify directors and officers as well as other
   employees and individuals against expenses (including attorney's
   fees), judgments, fines and amounts paid in settlement in connection
   with specified actions, suits or proceedings, whether civil, criminal,
   administrative or investigative (other than an action by or in the
   right of the corporation - a "derivative action"), if they acted in
   good faith and in a manner they reasonably believed to be in or not
   opposed to the best interests of the corporation, and, with respect to
   any criminal action or proceeding, had no reasonable cause to believe
   their conduct was unlawful.  A similar standard is applicable  in the
   case of derivative actions, except that indemnification only extends
   to expenses (including attorney's fees) incurred in connection with
   the defense or settlement of such action, and the statute requires
   court approval before there can be any indemnification where the
   person seeking indemnification has been found liable to the
   corporation.  The statute provides that it is not exclusive of other
   rights to which those seeking indemnification may be entitled under
   any by-law, agreement, vote of stockholders or disinterested directors
   or otherwise.

        The first paragraph of Article Ninth of the Corporation's Amended
   and Restated Certificate of Incorporation provides:

             The Corporation shall, to the fullest extent permitted
        by Section 145 of the General Corporation Law of the State
        of Delaware, as the same may be amended and supplemented, or
        by any successor thereto, indemnify any and all persons whom
        it shall have power to indemnify under said section from and
        against any and all of the expenses, liabilities or other
        matters referred to in or covered by said section.  Such

                                      3

        right to indemnification shall continue as to a person who
        has ceased to be a director, officer, employee or agent and
        shall inure to the benefit of the heirs, executors and
        administrators of such a person.  The indemnification
        provided for herein shall not be deemed exclusive of any
        other rights to which those seeking indemnification may be
        entitled under any By-Law, agreement, vote of stockholders
        or disinterested directors or otherwise.

        Article VIII of the Corporation's By-Laws provides:

             A.  The corporation shall indemnify each person who was
        or is made a party or is threatened to be made a party to or
        is involved in any threatened, pending or completed action,
        suit or proceeding, whether civil, criminal, administrative
        or investigative (hereinafter a "proceeding"), by reason of
        the fact that he or she, or a person of whom he or she is
        the legal representative, is or was a director or officer of
        the corporation or is or was serving at the request of the
        corporation as a director, officer, employee or agent of
        another corporation or of a partnership, joint venture,
        trust or other enterprise, including service with respect to
        employee benefit plans, whether the basis of such proceeding
        is alleged action in an official capacity as a director,
        officer, employee or agent or alleged action in any other
        capacity while serving as a director, officer, employee or
        agent, to the maximum extent authorized by the Delaware
        General Corporation Law, as the same exists or may hereafter
        be amended (but, in the case of any such amendment, only to
        the extent that such amendment permits the corporation to
        provide broader indemnification rights than said law
        permitted the corporation to provide prior to such
        amendment), against all expense, liability and loss
        (including attorney's fees, judgments, fines, ERISA excise
        taxes or penalties and amounts paid or to be paid in
        settlement) reasonably incurred by such person in connection
        with such proceeding.  Such indemnification shall continue
        as to a person who has ceased to be a director, officer,
        employee or agent and shall inure to the benefit of his or
        her heirs, executors and administrators.  The right to
        indemnification conferred in this Article shall be a
        contract right and shall include the right to be paid by the
        corporation the expenses incurred in defending any such
        proceeding in advance of its final disposition; provided
        that, if the Delaware General Corporation Law so requires,
        the payment of such expenses incurred by a director or
        officer in advance of the final disposition of a proceeding
        shall be made only upon receipt by the corporation of an
        undertaking by or on behalf of such person to repay all
        amounts so advanced if it shall ultimately be determined
        that such person is not entitled to be indemnified by the
        corporation as authorized in this Article or otherwise.

                                      4

             B.  The right to indemnification and advancement of
        expenses conferred on any person by this Article shall not
        limit the corporation from providing any other
        indemnification permitted by law nor shall it be deemed
        exclusive of any other right which any such person may have
        or hereafter acquire under any statute, provision of the
        Certificate of Incorporation, by-law agreement, vote of
        stockholders or disinterested directors or otherwise.

             C.  The corporation may purchase and maintain
        insurance, at its expense, to protect itself and any
        director, officer, employee or agent of the corporation or
        another corporation, partnership, joint venture, or other
        enterprise against any expense, liability or loss, whether
        or not the corporation would have the power to indemnify
        such person against such expense, liability or loss under
        the Delaware General Corporation Law.

        The Corporation has entered into indemnification agreements with
   certain of its officers and directors indemnifying such officers from
   and against certain expense, liabilities or other matters referred to
   in or covered by Section 145 of the Delaware General Corporation Law.
   The Corporation maintains directors' and officers' liability
   insurance.

        Section 102(b)(7) of the Delaware General Corporation Law permits
   a corporation to provide in its certificate of incorporation that a
   director of the corporation shall not be personally liable to the
   corporation or its stockholders for monetary damages for breach of
   fiduciary duty as a director, except for liability (i) for any breach
   of the director's duty of loyalty to the corporation or its
   stockholders, (ii) for acts or omissions not in good faith or which
   involve intentional misconduct or a knowing violation of law, (iii)
   for payments of unlawful dividends or unlawful stock repurchases or
   redemptions, or (iv) for any transaction from which the director
   derived an improper personal benefit.  The second paragraph of Article
   Ninth of the Corporation's Amended and Restated Certificate of
   Incorporation provides for such limitation of liability.

   ITEM 8.   EXHIBITS.

        The exhibits filed herewith or incorporated by reference herein
   are set forth in the Exhibit Index filed as part of this Registration
   Statement. The Plan Sponsor has received from the Internal Revenue
   Service a determination that the Plan is qualified under Section 401
   of the Internal Revenue Code and the Corporation will cause to be made
   all changes required by the Internal Revenue Service in order to
   continue to so qualify the Plan.

                                      5

                                 SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, the
   Corporation certifies that it has reasonable grounds to believe that
   it meets all of the requirements for filing this Registration
   Statement and has duly caused this registration statement to be signed
   on its behalf by the undersigned, thereunto duly authorized, in the
   City of Bethpage, State of New York, on this 29th day of March, 2001.

                                 CABLEVISION SYSTEMS CORPORATION

                                 By: /s/ James L. Dolan
                                     ----------------------------
                                     James L. Dolan
                                      Chief Executive Officer

        Pursuant to the requirements of the Securities Act of 1933, this
   Registration Statement has been signed by the following persons in the
   capacities and on the date indicated.  Each person whose signature
   appears below hereby authorizes William J. Bell and Robert S. Lemle,
   and either of them acting individually, with power of substitution to
   file one or more amendments, including Post-Effective Amendments, to
   this Registration Statement, which Amendments may make such changes as
   either of them deems appropriate, and each person whose signature
   appears below, individually and in each capacity stated below, hereby
   appoints William J. Bell and Robert S. Lemle, and either of them
   acting individually, with full power of substitution, as Attorney-in-
   Fact to execute his or her name and on his or her behalf to file any
   such Amendments to this Registration Statement.
SIGNATURE                                  TITLE                           DATE
                             ---------                                  -----                           ----
/s/ James L. Dolan                         President, Chief Executive Officer      March 29, 2001
             --------------------------------------     (Principal Executive Officer) and
             James L. Dolan                             Director

             /s/ William J. Bell                        Vice Chairman (Principal Financial      March 29, 2001
             --------------------------------------     Officer) and Director
             William J. Bell

             /s/ Andrew B. Rosengard                    Executive Vice President, Finance and   March 29, 2001
             --------------------------------------     Controller (Principal Accounting
             Andrew B. Rosengard                        Officer)

             /s/ Charles F. Dolan                       Chairman, Chairman of the Board of      March 29, 2001
             --------------------------------------     Directors
             Charles F. Dolan

                                                                6

                             SIGNATURE                                  TITLE                           DATE
                             ---------                                  -----                           ----

             /s/ Robert S. Lemle                        Vice Chairman, General Counsel,         March 29, 2001
             --------------------------------------     Secretary and Director
             Robert S. Lemle

             /s/ Sheila A. Mahony                       Executive Vice President,               March 29, 2001
             ---------------------------------------    Communications, Government and Public
             Sheila A. Mahony                           Affairs and Director

             /s/ Thomas C. Dolan                        Senior Vice President and Chief         March 29, 2001
             ---------------------------------------    Information Officer and Director
             Thomas C. Dolan

             /s/ John Tatta                             Director                                March 29, 2001
             ---------------------------------------
             John Tatta

             /s/ Patrick F. Dolan                       Director                                March 29, 2001
             ---------------------------------------
             Patrick F. Dolan

             /s/ Charles D. Ferris                      Director                                March 29, 2001
             ---------------------------------------
             Charles D. Ferris

                                                        Director
             ---------------------------------------
             Richard H. Hochman

             /s/ Victor Oristano                        Director                                March 29, 2001
             ---------------------------------------
             Victor Oristano

             /s/ Vincent Tese                           Director                                March 29, 2001
             ---------------------------------------
             Vincent Tese

             /s/ Michael Huseby                         Director                                March 29, 2001
             ---------------------------------------
             Michael Huseby

             /s/ Daniel E. Somers                       Director                                March 29, 2001
             ---------------------------------------
             Daniel E. Somers
7

        THE PLAN.  Pursuant to the requirements of the Securities Act of
   1933, the administrator of the Plan has duly caused this registration
   statement to be signed on its behalf by the undersigned, thereunto
   duly authorized, in the City of Bethpage, State of New York, on March
   29, 2001.

                                 CABLEVISION CHOICE 401(k) SAVINGS PLAN

                                 By: /s/ Martin McDonough
                                     ------------------------------------
                                      Martin McDonough
                                      Member, Administrative Committee

                                 By: /s/ Lisa Trimarchi
                                     -----------------------------------
                                      Lisa Trimarchi
                                      Member, Administrative Committee

                                 By: /s/ Frank Livoti
                                     -----------------------------------
                                      Frank Livoti
                                      Member, Administrative Committee

                                 By: /s/ Frank Golden
                                     -----------------------------------
                                      Frank Golden
                                      Member, Administrative Committee

                                 By: /s/ Raymond Andersen
                                     -----------------------------------
                                      Raymond Andersen
                                      Member, Administrative Committee

                                 By: /s/ Alan Gershowitz
                                     -----------------------------------
                                      Alan Gershowitz
                                      Member, Administrative Committee

                                      8

                                EXHIBIT INDEX

   EXHIBIT
   NUMBER         EXHIBIT
   ------         -------

     4            Amended and Restated Certificate of Incorporation of
                  the Corporation (incorporated by reference to Annex II
                  of the Proxy Statement)

    4.1           By-laws of the Corporation (incorporated by reference
                  to Exhibit 3.2 of the Corporation's Registration
                  Statement on Form S-4, dated January 20, 1998 (File
                  333-44547))

     23           Consent of KPMG LLP

     24           Power of Attorney (included on the signature page)

                                      9