Windows 2000 Profile Help Needed...

[Scarpozzi]

I'm helping some other people setup some computers for a lab. We have all the policies and profiles set for the most part. Everything is pretty secure. However, we need to come up with a solution for automatically logging the users off after a 15 minute period. I found a cool little program called WinExit which is a screensaver that's configurable to do what I need, however, it has an icon in the systray and no controls to diable it. Is there another way to make the computers automatically logoff? Or possibly a way to disable the icon in the systray? I wouldn't know what to look for in the registry. Thanks in advance.