EXHIBIT (a)(5)



         NOTHING CONTAINED HEREIN OR IN THE ENCLOSED  DOCUMENTS SHALL CONSTITUTE
YOU OR ANY OTHER  PERSON  THE AGENT OF  AMBANC,  D.F.  KING & CO.,  INC.  OR ANY
AFFILIATE  OF ANY OF THEM OR  AUTHORIZE  YOU OR ANY  OTHER  PERSON  TO MAKE  ANY
STATEMENT  OR USE ANY DOCUMENT ON BEHALF OF ANY OF THEM IN  CONNECTION  WITH THE
OFFER OTHER THAN THE ENCLOSED DOCUMENTS AND THE STATEMENTS CONTAINED THEREIN.



                           OFFER TO PURCHASE FOR CASH

                  All of the Outstanding Shares of Common Stock

                                       of

                              COHOES BANCORP, INC.

                                       at

                              $16.50 Net Per Share

                                       by

                            AMBANC HOLDING CO., INC.


THE OFFER AND  WITHDRAWAL  RIGHTS WILL EXPIRE AT 12:00  MIDNIGHT,  NEW YORK CITY
TIME, ON WEDNESDAY, SEPTEMBER 6, 2000, UNLESS THE OFFER IS EXTENDED.


                          LETTER TO CLIENTS OF BROKERS


                                                                  August 9, 2000

To Our Clients:

         Enclosed for your  consideration  are an Offer to Purchase dated August
9, 2000 (the "Offer to Purchase") and the related  Letter of Transmittal  (which
together  constitute  the "Offer")  relating to an offer by Ambanc  Holding Co.,
Inc., a Delaware  corporation  ("Ambanc"),  to purchase  all of the  outstanding
shares of common  stock,  par value  $.01 per share  (the  "Shares"),  of Cohoes
Bancorp,  Inc., a Delaware corporation (the "Cohoes"),  at $16.50 per Share, net
to the seller in cash,  without interest thereon,  upon the terms and subject to
the conditions set forth in the Offer.

         Holders of Shares whose  certificates for such Shares  ("Certificates")
are not immediately  available or who cannot deliver their  Certificates and all
other required  documents to the Depositary on or prior to the expiration of the
Offer  (the  "Expiration  Date"),  or who cannot  complete  the  procedures  for
book-entry transfer on a timely basis, must tender their Shares according to the
guaranteed delivery procedures set forth in Section 4 of the Offer to Purchase.



         THIS  MATERIAL IS BEING  FORWARDED  TO YOU AS THE  BENEFICIAL  OWNER OF
SHARES  CARRIED BY US IN YOUR ACCOUNT BUT NOT  REGISTERED IN YOUR NAME. A TENDER
OF SUCH  SHARES CAN BE MADE ONLY BY US AS THE HOLDER OF RECORD AND  PURSUANT  TO
YOUR  INSTRUCTIONS.  THE  LETTER OF  TRANSMITTAL  IS  FURNISHED  TO YOU FOR YOUR
INFORMATION  ONLY AND CANNOT BE USED BY YOU TO TENDER SHARES HELD BY US FOR YOUR
ACCOUNT.  ACCORDINGLY,  WE REQUIRE INSTRUCTIONS AS TO WHETHER YOU WISH TO TENDER
ANY OR ALL OF SUCH  SHARES  HELD BY US FOR  YOUR  ACCOUNT,  UPON THE  TERMS  AND
SUBJECT TO THE CONDITIONS SET FORTH IN THE OFFER.

Please note the following:

                  1.  Ambanc is  offering  to  purchase  all of the  outstanding
Shares at $16.50 per Share, net to the seller in cash, without interest thereon,
upon the terms and subject to the conditions set forth in the Offer.

                  2. The  Offer  and  withdrawal  rights  will  expire  at 12:00
Midnight, New York City time, on Wednesday,  September 6, 2000, unless the Offer
is extended.

                  3. The Offer is conditioned  upon,  among other things,  there
being validly  tendered and not withdrawn  prior to the  expiration of the Offer
that number of Shares which,  together with Shares beneficially owned by Ambanc,
represents  at least a majority  of the Shares  outstanding  on a fully  diluted
basis on the date of purchase.  Certain other  conditions to the consummation of
the Offer are described in Section 12 of the Offer to Purchase. Ambanc expressly
reserves the right to waive any one or more of the conditions of the Offer.

                  4.  Tendering  shareholders  will  not  be  obligated  to  pay
brokerage  fees or  commissions  or, except as set forth in Instruction 6 of the
Letter of  Transmittal,  stock transfer taxes on the purchase of Shares pursuant
to the Offer.

                  5.  Payment for Shares  accepted  for payment  pursuant to the
Offer  will  be  made  only  after  timely  receipt  by  the  Depositary  of (i)
certificates for such Shares or timely  confirmation of the book-entry  transfer
of such Shares,  into the  Depositary's  account at The Depository Trust Company
(the "Book-Entry  Transfer  Facility"),  pursuant to the procedures set forth in
Section  4 of the  Offer to  Purchase,  (ii) the  Letter  of  Transmittal  (or a
facsimile  thereof),  properly  completed and duly  executed,  with any required
signature guarantees or an Agent's Message (as defined in the Offer to Purchase)
(as  described  in  Section 4 of the Offer to  Purchase)  in  connection  with a
book-entry  transfer,  and (iii) any other  documents  required by the Letter of
Transmittal.  Accordingly, payment may not be made to all tendering shareholders
at the same time  depending  upon when  certificates  for, or  confirmations  of
book-entry  transfer  of,  such  Shares  into  the  Depositary's  account  at  a
Book-Entry Transfer Facility are actually received by the Depositary.

         If you wish to have us tender any or all of the  Shares  held by us for
your account, please so instruct us by completing, executing and returning to us
the instruction form contained in this letter. If you authorize a tender of your
Shares,  all such Shares will be tendered  unless  otherwise  indicated  in such
instruction form. Please forward your instructions to us in ample time to permit
us to submit a tender on your behalf prior to the  expiration of the Offer.  The
Letter of Transmittal is furnished to you for your  information  only and cannot
be used by you to tender Shares held by us for your account.

         Ambanc  is not  aware of any  state  where  the  making of the Offer is
prohibited by  administrative  or judicial action pursuant to state statute.  If
Ambanc  becomes  aware  of  any  state  where  the  making  of the  Offer  is so
prohibited, Ambanc will make a good faith effort to comply with any such statute
or seek to have such statute declared  inapplicable to the Offer. If, after such
good faith effort,  Ambanc cannot comply with any applicable statute,  the Offer
will not be made to (nor will  tenders  be  accepted  from or on behalf  of) the
holders of Shares in such states. In those  jurisdictions where the laws require
the Offer to be made by a licensed broker or dealer,  the Offer is being made on
behalf  of Ambanc  by or one or more  registered  brokers  or  dealers  that are
licensed under the laws of such jurisdiction.







           INSTRUCTIONS WITH RESPECT TO THE OFFER TO PURCHASE FOR CASH
                  ALL OF THE OUTSTANDING SHARES OF COMMON STOCK
                                       OF
                              COHOES BANCORP, INC.

         The undersigned  acknowledge(s) receipt of your letter and the enclosed
Offer to Purchase dated August 9, 2000 (the "Offer to Purchase") and the related
Letter of Transmittal  (which together  constitute the "Offer")  relating to the
offer by Ambanc  Holding  Co.,  Inc.,  a  Delaware  corporation  ("Ambanc"),  to
purchase all of the outstanding shares of common stock, par value $.01 per share
(the "Shares"),  of Cohoes Bancorp, Inc., a Delaware corporation,  at $16.50 per
Share,  net to the seller in cash,  without  interest thereon upon the terms and
subject to the  conditions set forth in the Offer to Purchase and in the related
Letter of Transmittal.

         This  will  instruct  you to  tender  to  Ambanc  the  number of Shares
indicated below (or if no number is indicated  below, all Shares) which are held
by you for the  account of the  undersigned,  upon the terms and  subject to the
conditions set forth in the Offer.

Dated: __________________________________    ___________________________________
                                                      Print Address

_________________________________________    ___________________________________
                                               Area Code and Telephone Number

_________________________________________    ___________________________________
               Signatures                           Tax Identification or
                                                    Social Security Number

_________________________________________
              Print Name(s)

_________________________________________


_________________________________________


_________________________________________



Number of Shares to be Tendered*
__________________ Shares


______________________

*        Unless otherwise indicated,  it will be assumed that all Shares held by
         us for your account are to be tendered.