>>Hi! Could anybody help me with this: In windows XP When I run a .exe I receive an error message: "Not a valid win32 appl". Why is this? Any solution?...
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>Have you filled any of the properties on the EXE in the Project Manager? (like product name, version, etc.). Clear them up and recompile again. I've found something like that happening before. Try and let us know if it helps.

FWIW, I've found that if it was compiled under a Win9x derivative OS, the problem often exists, and that in the widest range of cases, recompiling under WinNT 4.0 at SP4 or later, or under Winm2K or XP produced workable executables.