Exhibit 99.1

                             CONFIDENTIAL MEMORANDUM


To:               All Officers of Insight and its Subsidiaries

From:             Sidney R. Knafel
                  Michael S. Willner

Date:             September 16, 2005

Re:               Going Private Transaction
- --------------------------------------------------------------------------------

As you are aware,  on July 28,  2005,  we entered into a merger  agreement  with
Insight Acquisition Corp., a corporation  organized by affiliates of The Carlyle
Group for the sole purpose of effecting the merger and related transactions. The
transaction  would  have the  effect  of  taking  Insight  private  through  the
acquisition  of all of the  outstanding  publicly-held  shares of  Insight.  The
proposed  transaction  is not expected to result in a change in the  operational
aspects of our business.  Following consummation of the proposed transaction, we
would continue to provide great customer service and  state-of-the-art  products
to our customers.

Consummation  of the transaction is subject to stockholder  approval  (including
approval  by a  majority  of the  disinterested  public  stockholders)  and  the
satisfaction  of a number  of other  legal  requirements,  including  rules  and
regulations  issued by the Securities and Exchange  Commission.  If the proposed
transaction is consummated,  currently  outstanding  shares of Insight's  common
stock, other than certain shares held by certain continuing investors,  would be
converted into a right to receive a cash payment equal to $11.75 per share,  and
Insight would be  recapitalized  and new classes of stock would be issued to our
new stockholders.

Insight's  records  indicate that you presently own the Insight equity set forth
on the attached  Statement of Equity  Holdings.  This Statement does not reflect
any restricted  shares or shares that you may have acquired outside of Insight's
plans  (such as direct  purchase  through a broker).  If you believe any of this
information  is incorrect or incomplete,  please  contact  Gerald Isaacs,  Human
Resources Coordinator,  as soon as possible. Attached to the Statement of Equity
Holdings are  appendices  that describe the treatment of equity  holdings in the
proposed transaction. Certain of these documents also contain brief descriptions
of certain federal income tax  consequences  associated  with the  going-private
proposal.  Of  course,  tax  consequences  may vary  depending  upon  individual
circumstances  and these  materials  are not  intended  to provide  you with tax
advice.  Accordingly,  we urge you to consult  with your  personal  tax  adviser
regarding  your own federal  income tax  consequences,  as well as any state and
local tax consequences.

To the extent  that you  currently  own  Insight  stock  options  and you remain
employed  by Insight  following  the  merger,  you would be  eligible to receive
shares of another new series of incentive-based  stock of the private company in
consideration for future services to be provided by you to Insight.




If the  transaction  is not approved by the  stockholders  or does not otherwise
close,  Insight  would  continue  operating as a public  company and your equity
holdings would be unaffected.

We have enclosed a Questionnaire  requesting  information  regarding any Insight
common  stock  you  or  any  member  of  your  immediate  family  may  own.  The
Questionnaire  asks you to specify the number of shares of Insight  common stock
that you own (other than  shares  held in your 401(k)  account) or any member of
your family  owns.  As indicated  in the  Questionnaire,  under the terms of the
proposed merger agreement,  the number of shares held by officers of Insight and
their  immediate  family must be excluded in  determining  whether the condition
that the merger be approved by a majority of the disinterested  stockholders has
been  satisfied.  Please  complete  the  Questionnaire  and  return it to Elliot
Brecher BY NO LATER THAN  SEPTEMBER  26, 2005.  You should  return the completed
Questionnaire REGARDLESS of whether you own any Insight stock.

We are  also  providing  you  with a copy  of the  preliminary  proxy  statement
previously  filed with the  Securities  and  Exchange  Commission  ("SEC")  that
provides  detailed   information   regarding  the  proposed   transaction.   The
preliminary  proxy  statement  is  subject to review by the SEC and the SEC will
likely require changes to the proxy statement, some of which may be substantial.
However,  we believe  the  description  of the  proposed  merger and the related
transactions may be of interest to you and useful.

THIS  MEMORANDUM IS NOT A SOLICITATION  OF A PROXY OR A SUBSTITUTE FOR ANY PROXY
STATEMENT  OR OTHER  FILINGS  THAT WILL BE MADE  WITH THE SEC.  YOU ARE URGED TO
THOROUGHLY REVIEW AND CONSIDER INSIGHT'S  PRELIMINARY PROXY STATEMENT FILED WITH
THE SEC AND INCLUDED WITH THIS MEMORANDUM AND TO THOROUGHLY  REVIEW AND CONSIDER
ANY OTHER MATERIAL  RELATED TO THE  TRANSACTION  WHEN FILED WITH THE SEC BECAUSE
THEY DO AND WILL CONTAIN IMPORTANT INFORMATION.  ANY SUCH DOCUMENTS, ONCE FILED,
WILL BE AVAILABLE  FREE OF CHARGE AT THE SEC'S  WEBSITE  (WWW.SEC.GOV)  AND FROM
INSIGHT.  YOU SHOULD NOT PUT UNDUE RELIANCE ON THE PRELIMINARY  PROXY STATEMENT,
AS IT IS NOT COMPLETE  AND REMAINS  SUBJECT TO REVIEW BY THE SEC AND INSIGHT AND
CHANGES MAY BE SUBSTANTIAL.



                                                              September 16, 2005

                      INSIGHT COMMUNICATIONS COMPANY, INC.

                          STATEMENT OF EQUITY HOLDINGS

                         NAME:
                               ------------------------


I.   CURRENT  OPTION  HOLDINGS  -  SEE  ATTACHED  "STOCK  OPTION  APPENDIX"  FOR
     EXPLANATION

                                                              Cash At Closing
        Current Options            Exercise Price              (before taxes)
     ----------------------    ---------------------    ------------------------









II.  NEW PARTICIPATING COMMON STOCK to be granted (subject to specific terms and
     conditions)  after  closing - SEE  ATTACHED  "STOCK  OPTION  APPENDIX"  FOR
     EXPLANATION

             Shares of Series E
             Non-Voting Common            Participation Level
                   Stock                       Threshold
         ---------------------------    -------------------------







III. 401(K) SHARES - SEE ATTACHED "401(K) APPENDIX" FOR EXPLANATION

           Shares of Class A           Cash to be
             Common Stock             Received in
           Currently Held in       401(k) at Closing
                401(k)
         ----------------------    -------------------





IV.  DEFERRED SHARES - SEE ATTACHED "DEFERRED SHARES APPENDIX" FOR EXPLANATION

            Deferred Shares
             Currently Held
         -----------------------



Note:  Any shares held after the closing of the proposed  merger will be subject
to terms,  conditions and restrictions  applicable to such shares and any equity
or equity based awards made by the Company  after the closing will be subject to
certain additional terms, conditions and restrictions.




                      INSIGHT COMMUNICATIONS COMPANY, INC.

                           QUESTIONNAIRE FOR OFFICERS


Insight has entered into a merger agreement with Insight  Acquisition  Corp., an
entity  organized by  affiliates of The Carlyle  Group,  for the sole purpose of
effecting the merger and related transactions. Pursuant to the merger agreement,
publicly held shares of Insight's  common stock (other than certain  shares held
by certain  continuing  investors)  will be converted  into the right to receive
$11.75  per share in cash.  The merger  agreement,  in part,  requires  that the
merger agreement be adopted and approved by a majority of the outstanding  share
of Insight  Class A common stock  entitled to vote thereon NOT held by:  Insight
Acquisition  Corp.,  the  continuing  investors  (or any member of the immediate
families  thereof);  Carlyle  or any  affiliates  thereof;  or any  officers  or
directors of Insight (or any member of the immediate  families  thereof).  As an
officer  of  Insight,  we are  asking  you to  provide  us  with  the  following
information in order to comply with this requirement under the merger agreement.
You should  complete this  Questionnaire  with care, as Insight will rely on the
information supplied by you. If you need more space to complete your response to
any question  below,  please complete your response on a separate sheet of paper
and attach it to this  Questionnaire.  If you have any questions  regarding this
Questionnaire, you may contact Elliot Brecher at (917) 286-2230.

1. Your Name:
              ------------------------

2. Please  indicate below the total number of shares of common stock (other than
shares held in your 401(k)  account)  beneficially  owned by you, your spouse or
for the benefit (in trust or otherwise)  of your minor  children or any relative
of you or your  spouse who shares your home,  including  any  restricted  shares
owned by you.  Review the  definition  of  "beneficial  ownership" in Appendix A
before answering this question.

     (a)  Total number of shares of common stock (including  restricted shares):

          --------------------

     (b)  If you  participated  in the exchange  offer  completed in May,  2005,
          pursuant to which your  Insight  loan was  cancelled  in exchange  for
          restricted  shares,  indicate the total number of shares from line (a)
          that are restricted shares:
                                      ----------------

     (c)  Nature of  ownership  of shares  from  line (a)  (e.g.,  individually,
          through spouse,  trust,  etc.),  and the number of shares held in each
          such capacity, if more than one capacity:
                                                   -----------------------------
          ----------------------------------------------------------------------
          ----------------------------------------------------------------------

     (d)  If held  through an account  at a broker,  bank or other  institution,
          please provide the following information for each such account:

          1.   Name of bank, broker or other institution:
                                                         -----------------------

          2.   Exact title of this account as it appears on your  Statement (for
               example, your name):
                                   ---------------------------------------------




          3.   Your Account Number:
                                   -------------------------

          4.   Number of shares held in this account:
                                                     -------------------------





3. Please complete the following table with respect to all purchases,  sales and
other transactions of Insight's common stock on or after January 1, 2003. If the
appropriate response is "none," please so state.



                                                                                  

           Nature of Transaction                 Date                Number of Shares            Price Per Share
   -------------------------------------- ------------------- ------------------------------- -----------------------


   -------------------------------------- ------------------- ------------------------------- -----------------------

   -------------------------------------- ------------------- ------------------------------- -----------------------

   -------------------------------------- ------------------- ------------------------------- -----------------------

   -------------------------------------- ------------------- ------------------------------- -----------------------

   -------------------------------------- ------------------- ------------------------------- -----------------------

   -------------------------------------- ------------------- ------------------------------- -----------------------

   -------------------------------------- ------------------- ------------------------------- -----------------------

   -------------------------------------- ------------------- ------------------------------- -----------------------




Please execute the Certification  below and return your completed  Questionnaire
to Elliot Brecher NO LATER THAN SEPTEMBER 26, 2005.


                                  CERTIFICATION

     I  hereby  certify  that  to the  best  of my  knowledge  and  belief,  the
information given by me in this Questionnaire is correct and complete.

                                          Signature:
                                                    --------------------------
                                          Name:
                                                    --------------------------
                                          Date:
                                                    --------------------------



                                   APPENDIX A

     BENEFICIAL OWNERSHIP.  As used in this Questionnaire,  the term "beneficial
ownership" does not carry its ordinary  connotation.  Rather,  it is a technical
term  which  has  been  specifically  defined  by the  Securities  and  Exchange
Commission  (the "SEC").  The term as defined by the SEC is used in a very broad
sense to  encompass  many  situations  which  might  not be  thought  to  confer
ownership  in the  usual  sense.  It is  therefore  important  to  give  careful
consideration  to the definition and the  discussion  which follows.  If you are
uncertain  whether a  particular  set of facts  warrants a  conclusion  that you
beneficially  own  securities,  please resolve your doubts in favor of reporting
the securities in question (and please note that, notwithstanding your reporting
of such securities,  you may disclaim beneficial  ownership of any such reported
securities  by  making  an  appropriate  notation  on the  Questionnaire  if you
nevertheless  believe  that  attribution  of  beneficial  ownership  to  you  is
unwarranted).

     The SEC has provided the following general definition:

          A "beneficial  owner" of a security  includes any person who, directly
          or  indirectly,  through  any  contract,  arrangement,  understanding,
          relationship, or otherwise, has or shares:

               (1)  voting power, which includes the power to vote, or to direct
                    the voting of, such security; and/or

               (2)  investment power, which includes the power to dispose, or to
                    direct the disposition, of such security.

It should be emphasized that the possession of EITHER voting power OR investment
power as described above suffices to confer beneficial ownership.

     To be  "beneficially  owned," the securities need not be registered in your
name. For example,  you would  ordinarily be considered the beneficial  owner of
securities  held in the name of a family member if you have the power to vote or
dispose of such securities, held by a trust of which you are a trustee, held for
you in the name of a  nominee  such as a  broker  or held by a  corporation  you
control or a partnership of which you are a partner.

     On the other hand, securities would not be beneficially owned by you if you
only have the right to  receive  dividends  on, or the sale  proceeds  of,  such
securities  and do not have or share the power to vote or dispose  of them.  For
example,  a beneficiary of the income from securities held in a trust managed by
independent  trustees  would  not  ordinarily  be the  beneficial  owner  of the
securities held in the trust.



                              STOCK OPTION APPENDIX

A.   VESTED AND UNVESTED "IN THE MONEY" STOCK OPTIONS (I.E.,  STOCK OPTIONS WITH
     AN EXERCISE PRICE LOWER THAN THE $11.75 PRICE TO BE PAID FOR INSIGHT SHARES
     IN THE MERGER)

CASH-OUT.  Upon the consummation of the merger, these options (whether vested or
unvested)  would be  canceled in exchange  for a cash  payment per option  share
equal to the  difference  between  the  exercise  price and the $11.75 per share
merger price. This cash payment would be taxable to you as ordinary income.

NEW SERIES E SHARES.  In  addition,  after the  consummation  of the merger,  in
consideration for future services to be provided by you to Insight, Insight will
grant you one (1) share of a new  series of Insight  stock  (Series E) for every
share  subject to the canceled  options.  Your shares of Series E stock would be
entitled to  participate in the per share  appreciation  of the value of Insight
over the $11.75 per share merger price.  These shares would be subject to a five
(5) year vesting  schedule,  as well as certain other terms and conditions which
would be contained  in a  subscription  agreement  that you would be required to
sign as a  condition  to  receiving  these  shares.  In  addition,  you would be
required to enter into a Securityholders  Agreement,  which would contain, among
other  provisions,  restrictions  on the sale or other transfer of Insight stock
and certain restrictions on voting rights, but would give shareholders rights to
sell  their  shares as part of  certain  sale  transactions  initiated  by other
specified shareholders. The agreement also would require you to sell your shares
in connection with certain future sale transactions.

B.   VESTED AND  UNVESTED  "OUT OF THE MONEY"  OPTIONS  (I.E.,  OPTIONS  WITH AN
     EXERCISE  PRICE  EQUAL TO OR HIGHER  THAN THE  $11.75  PRICE TO BE PAID FOR
     INSIGHT SHARES IN THE MERGER).

Upon the  consummation  of the merger,  you would  receive no cash  payments for
these options and they would be canceled.

NEW SERIES E STOCK.  After the consummation of the merger,  in consideration for
future services to be provided by you to Insight, Insight will grant you one (1)
share of a new series of Insight stock (Series E) for every share subject to the
canceled options. Your shares of Series E stock would be entitled to participate
in the per share appreciation of the value of Insight over the exercise price of
your canceled options.  These shares would be subject to a vesting schedule that
mirrors the vesting schedule of the canceled options, so you will be immediately
vested in the same number of Series E shares as any option  shares that  already
are vested under the canceled  options.  The vesting  terms,  as well as certain
other terms and conditions,  would be contained in a subscription agreement that
you would be required to sign as a  condition  to  receiving  these  shares.  In
addition, you would be required to enter into a Securityholders  Agreement which
would  contain,  among  other  provisions,  restrictions  on the  sale or  other
transfer of Insight stock and certain  restrictions on voting rights,  but would
give  shareholders  rights  to  sell  their  shares  as  part  of  certain  sale
transactions initiated by other specified shareholders. The agreement also would
require  you to  sell  your  shares  in  connection  with  certain  future  sale
transactions.



C.   TAX CONSEQUENCES

Any cash payment you receive for "In The Money" stock  options  would be taxable
to you as ordinary income.  Any new Series E shares you receive after the merger
that are vested as of the date they are  awarded  would be  taxable as  ordinary
income  as of the  date of the  award.  The  amount  you  would be  required  to
recognize  as ordinary  income  would be based on the fair  market  value of the
Series E shares at the time of the award.  Series E shares you receive  that are
not vested as of the date they are awarded  would  ordinarily  be taxable at the
time they  become  vested  unless  you make a special  election  under  Internal
Revenue Code Section 83(b),  which would cause you to recognize  ordinary income
equal to the fair market  value of the Series E shares at the time of the award.
Any new Series E shares you receive after the merger are not currently  expected
to have a significant value at the time of the grant. As a result,  there may be
advantages to you in making an 83(b) election.  The potential  advantage to such
an election is that future appreciation in the value of the shares from the date
of the award  (rather than the vesting  dates) would be taxable as capital gains
on ultimate sale of the shares. In the event that an 83(b) election is made, any
depreciation  in the value of the shares  may be treated as a capital  loss upon
disposition.  However,  any  forfeiture  of the  shares  may not be treated as a
capital  loss.  You will need to evaluate  the  potential  costs and benefits to
making such an election taking your personal  circumstances into  consideration.
Additional information about the Section 83(b) election will be forthcoming.  Of
course,  tax  consequences  may vary depending on individual  circumstances  and
these materials are not intended to provide you with tax advice. Accordingly, we
urge you to  consult  with your own  personal  tax  advisor  regarding  your own
federal  income  tax   consequences,   as  well  as  any  state  and  local  tax
consequences.



                            DEFERRED SHARES APPENDIX


Holders of deferred  shares will not  receive  any cash in  connection  with the
merger.  Upon  consummation of the merger,  Insight will adjust the terms of the
deferred share award  agreements so that the holders will be entitled to receive
the same number of shares of Insight's new Series C stock,  instead of the Class
A  common  stock  currently   provided  for  under  the  deferred  shares  award
agreements.  The  Series C stock  is the same  series  of  stock  that  would be
received  by all  shareholders  who are  "rolling  over"  shares  as  continuing
investors in Insight upon completion of the merger,  including Sidney Knafel and
Michael  Willner.  Insight  also will  modify  the  awards to  provide  that the
deferral  period  will  continue  until the  earlier  of a change in  control of
Insight or your  termination  of  employment.  The terms of the  deferred  share
awards would  otherwise  remain  unchanged.  You should note that the Company is
currently  considering  modifying the terms of these awards to distribute shares
only upon the occurrence of a future change in control in order to avoid causing
a tax  liability  at a time when the  shares  are not  liquid.  Insight  also is
considering  other  changes  that may be necessary or advisable as the result of
recent changes to certain tax rules  applicable to these types of  arrangements.
We will provide you with further information about such changes.

TAX CONSEQUENCE

You should not  recognize  taxable  income on this  adjustment  to your deferred
share  award.  You should  note that,  unrelated  to the  merger,  in 2004,  new
provisions  were  added  to the  Internal  Revenue  Code  that  affect  deferred
compensation  arrangements  including Insight's deferred share arrangements.  As
additional guidance is issued by the IRS, further  modification of your deferred
share  arrangements  may be  required.  We  will  provide  you  with  additional
information  as  developments  occur.  Of  course,  tax  consequences  may  vary
depending on individual  circumstances  and these  materials are not intended to
provide  you with tax  advice.  Accordingly,  we urge  you to  consult  your own
personal tax advisor regarding your own federal income tax consequences, as well
as any state and local tax consequences.

ADDITIONAL AGREEMENTS

To the extent that modifications to the deferred share arrangements are required
either as the result of the merger or due to new tax rules,  you may be required
to execute a new deferred share agreement. In addition, in the event you receive
a  distribution  of shares under the program  prior to a change in control,  you
would be  required  to enter  into a  Securityholders  Agreement  with the other
Insight shareholders and Insight.  The Securityholders  Agreement would contain,
among other  provisions,  restrictions  on the sale or other transfer of Insight
stock and certain  restrictions  on voting rights,  but would give  shareholders
rights to sell their  shares as part of certain sale  transactions  initiated by
other specified shareholders.  The agreement also would require you to sell your
shares in connection with certain future sale transactions.




                                 401(K) APPENDIX


Upon consummation of the merger, you would continue to participate in the 401(k)
plan.  Shares of Insight stock that you currently  hold in your 401(k)  account,
including any fractional shares, would be cashed out in the merger at the merger
price of $11.75 per share. That transaction would be tax deferred. You will also
receive  information  regarding the  reinvestment of the cash proceeds  received
into your account.


After the merger, Insight will continue to provide matching contributions in the
401(k)  plan.  The amount  and form of the  matching  contribution  would not be
determined until after the closing of the merger by the newly  constituted Board
of  Directors.  We do expect,  however,  that Insight will continue to provide a
competitive and attractive matching contribution after closing.