The Problem:-When you try to run 16 bit programs or applications on a 64-bit Windows XP Professional you get the following errors:-
Install.exe is not a valid win32 application.
Setup.exe is not a valid win32 application.
16-bit programs are not compatible with the 64-bit version.
64-bit versions of Windows do not support 16-bit components, 16-bit processes, or 16-bit applications