>>Recompile on NT or Win2K.
>
>I have installed VFP6 and the sources in the PC of my customer (Win2K), generated the executable, and it produces the same message ('this is not a valid W32 application').
>What can I do?
>Thanks in advance.

If you have all your source code on the same machine. Delete the existing exe then recompile and make sure you select Recompile All Files. If you run the exe on the same box you should not get this error.

Also, this may not be a problem but make sure you have VS Sp5 installed as well.