EXHIBIT 4.2

                         FORM OF STOCK OPTION AGREEMENT
                       TO BE ENTERED INTO WITH RESPECT TO
                             INCENTIVE STOCK OPTIONS



                             STOCK OPTION AGREEMENT

                  FOR INCENTIVE STOCK OPTIONS UNDER SECTION 422
                          OF THE INTERNAL REVENUE CODE
                                 PURSUANT TO THE
                            ADVANCE FINANCIAL BANCORP
                             1998 STOCK OPTION PLAN


     STOCK  OPTIONS  for a total of  _____________  shares  of  Common  Stock of
Advance Financial  Bancorp (the "Company"),  which Option is intended to qualify
as an Incentive  Stock Option under Section 422 of the Internal  Revenue Code of
1986, as amended, is hereby granted to ___________________ (the "Optionee"),  at
the price  determined as provided in, and in all respects  subject to the terms,
definitions and provisions of the 1998 Stock Option Plan (the "Plan") adopted by
the Company  which is  incorporated  by  reference  herein,  receipt of which is
hereby acknowledged.

     1. Option Price.  The Option price is  $___________  for each Share,  being
100% of the fair market value,  as determined  by the  Committee,  of the Common
Stock on the date of grant of this Option.

     2. Exercises of Option. This Option shall be exercisable in accordance with
provisions  of the Plan,  provided  the  holder of such  Option is an  employee,
director or director emeritus of the Company as of such date, as follows:

     (a) Schedule of Rights to Exercise.
                                                           Percentage of
                                                           Total Shares
                                                           Awarded Which
                                                         Are Exerciseable/
                                Date       Options        Non-forfeitable
                                ----       -------        ---------------

January 20, 1998 .......................    ______              25%
As of January 20, 1999..................    ______              50%
As of January 20, 2000..................    ______              75%
As of January 20, 2001..................    ______             100%


     Options awarded to the Optionee shall continue to vest annually during such
period that he serves as an employee,  director or director  emeritus of Advance
Financial  Savings Bank or the Company.  Notwithstanding  any provisions in this
Section 2, in no event  shall  this  Option be  exercisable  prior to six months
following the date of grant.  Options shall be 100% vested and exercisable  upon
the death or  disability  of the  Optionee,  or upon a Change in  Control of the
Company. Options shall become "non-incentive" options and remain exercisable for
remaining term upon retirement  after not less than 10 years of service,  if not
exercised within 3 months of retirement.






     (b) Method of  Exercise.  This  Option  shall be  exercisable  by a written
notice which shall:

     (i) State the  election to exercise  the Option,  the number of Shares with
respect  to which it is being  exercised,  the  person  in whose  name the stock
certificate or certificates for such Shares of Common Stock is to be registered,
his  address  and  Social  Security  Number  (or if more  than one,  the  names,
addresses and Social Security Numbers of such persons);

     (ii)  Contain  such  representations  and  agreements  as to  the  holder's
investment  intent  with  respect  to such  shares  of  Common  Stock  as may be
satisfactory to the Company's counsel;

     (iii) Be signed by the person or persons  entitled to  exercise  the Option
and, if the Option is being  exercised  by any person or persons  other than the
Optionee,  be accompanied by proof,  satisfactory to counsel for the Company, of
the right of such person or persons to exercise the Option; and

     (iv) Be in writing  and  delivered  in person or by  certified  mail to the
Treasurer of the Company.

     Payment  of the  purchase  price of any  Shares  with  respect to which the
Option is being  exercised  shall be by certified or bank  cashier's or teller's
check.  The certificate or  certificates  for shares of Common Stock as to which
the Option shall be exercised  shall be  registered in the name of the person or
persons exercising the Option.

     (c)  Restrictions  on  Exercise.  This Option may not be  exercised  if the
issuance of the Shares upon such  exercise  would  constitute a violation of any
applicable  federal or state securities or other law or valid  regulation.  As a
condition to the Optionee's exercise of this Option, the Company may require the
person  exercising  this Option to make any  representation  and warranty to the
Company as may be required by any applicable law or regulation.

     3. Non-transferability of Option. This Option may not be transferred in any
manner  otherwise than by will or the laws of descent or distribution and may be
exercised during the lifetime of the Optionee only by the Optionee. The terms of
this  Option  shall  be  binding  upon  the  executors,  administrators,  heirs,
successors and assigns of the Optionee.







     4. Term of  Option.  This  Option may not be  exercised  more than ten (10)
years  from the date of grant of this  Option,  as set forth  below,  and may be
exercised  during  such term only in  accordance  with the Plan and the terms of
this Option.

     5.  Dividend  Equivalent  Rights.  The Stock  Options  represented  by this
Agreement shall include the right of the Optionee to receive payment of dividend
equivalent  rights.  Such rights  shall  provide that upon the payment of a cash
dividend on the Common Stock,  the holder of such Options shall receive  payment
of cash in an amount  equivalent to the cash dividend payable as if such Options
had been  exercised  and such Common Stock held as of the dividend  record date.
Such rights  shall  expire upon the  expiration  or exercise of such  underlying
Options.   Such  rights  are   non-transferable  and  shall  attach  to  Options
represented  by this  Agreement  whether  or not such  Options  are  immediately
exercisable.

     6.  Related  Matters.  Notwithstanding  anything  herein  to the  contrary,
additional  conditions or restrictions  related to such Options may be contained
in the Plan or the resolutions of the Plan Committee  authorizing  such grant of
Options.


                                                     Advance Financial Bancorp



Date of Grant:                  , 1999               By:                     
              ------------------                        ------------------------
Attest:


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


[SEAL]






                      INCENTIVE STOCK OPTION EXERCISE FORM

                                 PURSUANT TO THE
                            ADVANCE FINANCIAL BANCORP
                             1998 STOCK OPTION PLAN

                                                       -----------------
                                                             (Date)


Advance Financial Bancorp
1015 Commerce Street
Wellsburg, West Virginia 26070


Dear Sir:

     The  undersigned  elects to exercise the Incentive Stock Option to purchase
shares of Common  Stock of Advance  Financial  Bancorp  under and  pursuant to a
Stock Option Agreement dated , 19 .

     Delivered  herewith  is a certified  or bank  cashier's  or teller's  check
and/or shares of Common  Stock,  valued at the fair market value of the stock on
the date of exercise, as set forth below.

                              $             of cash or check
                               -------------
                                            of Common Stock
                               -------------
                              $             Total
                               =============


     The name or names to be on the stock  certificate or  certificates  and the
address and Social Security Number of such person(s) is as follows:

         Name                                                              
               ------------------------------------------
         Address                                                         
               ------------------------------------------
         Social Security Number                                    
                               --------------------------

                                                   Very truly yours,



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