>I am runnning into a problem with some of my less experianced users on slower PCs. They tend to keep clicking on the icon causing my EXE to start more than once. Is there a Windows call or anything that I can use to detect if my exe is already running? I assume there is an api call that returns the currently running processes in windows. The same list you get when you press ctrl/alt/delete.

There has been a number of threads on this topic over the last few months. You could search messages; also a quick search of the Files section turned up #1004 which may be of use to you.