Just an update in case anyone is using windows server 2003 to run executables.

The problem I had where an application would run on xt but not on windows server 2003 has been solved.

The problem was in Windows Server 2003 'Data Execution Protection' setting. I had a third party ocx called
ChadoSpellText, which is used to provide spell checking in an editbox. Win2003 apparently decided that
the ocx was a virus and was preventing execution of the module thereby crashing Foxpro. By changing
the settings within DEP in Control Panel settings, I was able to bypass the Win2003 error.

Hope this helps anyone else encountering this problem.