Securing a computer lab network (Score 1)

We use a wonderful program called Deep Freeze (faronics.com). After you have a clean drive, you install Deep Freeze. Then any time you want to change the desktop or anything on the C: drive, the next time the computer is rebooted, those changes are lost and it goes back to being "clean." The administrator can thaw the machine to make changes, though, and then just refreeze it when you've got it the way you want it. Ours are set to automatically reboot each night. This program has saved me literally hours and hours of work cleaning up computers.