Hi
You can try the open source Interbase/Firebird ODBC driver from IBPhoenix and the Firebird server( client library only installation ). www.ibphoenix.com
These dlls are free (gds32.dll and fbclient.dll). Maybe will work.

>>Ok guys, let try this again.
>>
>>Does anyone know how to read a InterBase database? A client has a very large Interbase database (from unix), and wants it ported to SQL Server. All search reveal that a ODBC driver is needed. But the drivers I have found all require the a GDS32.dll be installed. The only place I have been able to locate this file is Borland / Interbase products. We are not interested in investing money into buying a full product just to get the driver for a one time uses.
>>
>>Does anyone have any suggestions?
>
>http://www.tet-informatica.com/demos/index.asp
>you could download it from that page