XP reverting back to "x" image after user logoff

I would like to set up a XP Home computer with a fresh intall of the OS and programs. When someone comes in to use it, and they are done, I want the computer to revert, backup, restore or whatever right back to where it started when they first turned it on. I know this can be done through a domain, but, i am talking about a stand alone computer with XP home edition on it. I would think there is some software or something that will do this. Thanks.