>I'm sorry, but I don't understand your response.
>WILL the 32-bits apps work in Windows 7 (64-bit)?

64/32 bit is not the problem. Security being tightened from XP in Vista/Win7 is - regardless of bit size.
Another problem you will/might have with Vista/Win7 vs. XP is SMB2 and/or OPlocking for accessing dbf in multiuser mode on a server.