I agree with dmex here above, I think it is not a good idea.
If you want to try, just run Task Scheduler, click Add Task and choose Other Applications in Application drop down menu. Browse to C:\Users\Your_Username\AppData\Local\Microsoft\Windows Virtual PC\Virtual Applications\Windows XP Mode (default location for XP Mode applications). Remember to choose file type as All Files, installed XP Mode applications are shown as ico-files so if you just look for programs, you'll find nothing.
If you test it, please come back to tell how it worked.