The ShellExecute doesn't return a true HINSTANCE. See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/functions/shellexecute.asp for details.
You may want to try API_APPRUN in .VCX form File #9477

>I converted the code to VFP and the return from GetWindowProcessID doesn't return the same thing that ShellExecute returns.
>