FOR IMMEDIATE RELEASE          September 1, 2004

                   Contact:    Parkvale Financial Corporation
                               Robert J. McCarthy, Jr. President and CEO or
                               Timothy G. Rubritz, CFO
                               412/373-7200

                               Advance Financial Bancorp
                               Stephen M. Gagliardi, Chairman, President and CEO
                               304/737-3531


          Parkvale Financial Corporation and Advance Financial Bancorp
                             Announce Plans to Merge


Monroeville,  PA and  Wellsburg,  WV,  September  1, 2004 -- Parkvale  Financial
Corporation  (Nasdaq:  PVSA) ("Parkvale") and Advance Financial Bancorp (Nasdaq:
AFBC),  ("Advance") announced today the signing of a definitive merger agreement
for Parkvale to acquire Advance.

Under the terms of the  definitive  agreement,  which has been  approved  by the
boards of directors of both  organizations,  Advance  shareholders  will receive
$26.00 in cash, for a total transaction value of approximately $38 million,  and
is conditioned upon the receipt of the necessary regulatory approvals of Advance
and Parkvale and shareholder approval of Advance Financial Bancorp. Based on the
$26.00 per share value, the transaction  represents 175.5% of Advance's June 30,
2004 book value and 15.3 times its trailing 12 months earnings.

"This merger  combines two  companies  with  similar  cultures and  represents a
natural market extension for Parkvale." said Robert J. McCarthy,  Jr., President
and Chief Executive Officer of Parkvale Financial Corporation. Mr. McCarthy also
noted,   "This  merger   reinforces   our  strategic   plan  of  seeking  growth
opportunities  that enhance  shareholder  value." The merger is  anticipated  to
close in late 2004 or early 2005.  Management of Parkvale  expects the merger to
be immediately accretive to earnings.

"We  are  very  pleased  to  be  joining   Parkvale  and  very  excited  by  the
opportunities  for  our  customers,   our  community,   our  employees  and  our
shareholders,"  stated  Stephen  M.  Gagliardi,  Chairman,  President  and Chief
Executive  Officer  of  Advance.  "Parkvale  is  one of  the  premier  financial
institutions in western Pennsylvania.  We share the same focus on retail growth,
operational efficiency, and community banking."

Advance,  headquartered in Wellsburg,  West Virginia, had $321 million in assets
and $268 million in deposits at June 30, 2004 with seven full service offices in
Follansbee,  Brooke County,  West Virginia,  in Steubenville  and  Wintersville,
Jefferson County,  Ohio and in Bridgeport and Shadyside,  Belmont County,  Ohio.
Parkvale, headquartered in Monroeville, Pennsylvania, had $1.6 billion in assets
at June 30, 2004 and $1.3  billion in  deposits,  and  operates  through 39 full
service branches

                                     -more-



located in the  contiguous  counties  of  Allegheny,  Beaver,  Butler,  Fayette,
Washington,  and  Westmoreland  in  Pennsylvania.  The  addition  of seven  well
appointed branch offices of Advance with an average deposit size of $38 million,
each  office  equipped  with at least  two  drive-up  windows  as well as an ATM
drive-up,  will expand Parkvale's lending  opportunities and number of community
offices to 46 and increase the number of ATM locations to 45. The companies said
that  certain   anticipated   expense   reductions  would  come  primarily  from
consolidation of various administrative and back-office functions. The companies
have  distinct  geographic  retail  networks,   and  minimal   branch-based  job
eliminations are expected.

Boenning & Scattergood,  Inc. served as financial advisor to Parkvale and Keefe,
Bruyette & Woods,  Inc.  served as financial  advisor to Advance.  Elias,  Matz,
Tiernan & Herrick,  LLP provided  legal counsel for Parkvale and Malizia Spidi &
Fisch, PC provided legal counsel for Advance.

The common  stock of Parkvale  is traded on the Nasdaq  Stock  Market,  National
Market System under the symbol of "PVSA".  Parkvale  makes  available on its web
site,  which is located at  www.parkvale.com,  its annual  reports on Form 10-K,
quarterly  reports on Form 10-Q and current reports on Form 8-K on the date such
reports are electronically filed with the Securities and Exchange Commission.

The common  stock of Advance  Financial  is traded on the Nasdaq  Stock  Market,
National  Market System under the symbol of "AFBC".  Previous  annual reports on
Form 10-K,  quarterly reports on Form 10-Q and current reports on Form 8-K filed
with the SEC by Advance will be available  free of charge from the  Secretary of
Advance at 1015  Commerce  Street,  Wellsburg,  West Virginia  26070,  telephone
304/737-3531.

Statements  contained  in this news release  that are not  historical  facts are
forward-looking  statements  as that term is defined in the  Private  Securities
Litigation  Reform Act of 1995. Such  forward-looking  statements are subject to
risks and  uncertainties  that could cause actual  results to differ  materially
from those  currently  anticipated  due to a number of  factors.  The  following
factors, among others, could cause actual results to differ from those set forth
in the forward-looking  statements: the ability to obtain governmental approvals
of the  merger on the  proposed  terms and  schedule;  the  failure  of  Advance
shareholders  to approve the merger;  the risk that the  businesses  will not be
integrated  successfully;  the  risk  that  the  cost  savings  and any  revenue
synergies  from the  merger  may not be fully  realized  or may take  longer  to
realize than  expected;  disruption  from the merger making it more difficult to
maintain   relationships  with  clients,   employees  or  suppliers;   increased
competition and its effect on pricing,  spending,  third-party relationships and
revenues;  and  the  risk  of new  and  changing  regulation  in the  U.S..  The
forward-looking  statements  in this press  release speak only as of the date of
the filing,  and neither  Parkvale nor Advance  assumes any obligation to update
the forward-looking statements or to update the reasons why actual results could
differ from those contained in the forward-looking statements.

This  document  may be deemed to be  solicitation  material  with respect to the
proposed  merger  of  Parkvale  and  Advance.  Advance  will be  filing  a proxy
statement and other relevant documents concerning the merger with the Securities
and Exchange  Commission.  Investors are urged to read these documents when they
become available because they will contain important information. Investors will
be  able  to  obtain  these  document  free  of  charge  at the  SEC's  website,
www.sec.gov.  In  addition,  documents  filed with the SEC by  Parkvale  will be
- -----------
available free of charge

                                     -more-



from the  Secretary  of Parkvale  Financial  Corporation  at 4220  William  Penn
Highway,  Monroeville, PA 15146, telephone 412/373-7200 and documents filed with
the SEC by  Advance  will be  available  free of charge  from the  Secretary  of
Advance at 1015  Commerce  Street,  Wellsburg,  West Virginia  26070,  telephone
304/737-3531.  Parkvale and Advance and their  directors and executive  officers
may be deemed to be participants  in the  solicitation of proxies to approve the
merger.  Information about the directors and executive  officers of Parkvale and
their  ownership of Parkvale  common  stock is set forth in the proxy  statement
filed by Parkvale with the SEC dated September 15, 2003.  Information  about the
directors  and  executive  officers  of Advance and their  ownership  of Advance
common stock is set forth in the proxy  statement  filed by Advance with the SEC
dated  September  24,  2003.  Stockholders  of  Advance  should  read the  proxy
statement and other documents to be filed with the SEC carefully before making a
decision concerning the merger.

                                      ####