How do I prevent users on the guest account from downloading or changing the settings on XP?

I have a Business Center PC that a guest used and ruined. I plan to format the entire hard drive. How do I, as the Admin, prevent users on the guest account from downloading illegal items and changing settings? I want them to have limited web access and look at Office documents only. No games/facebook, changing computer settings. Thanks.
How do I prevent users on the guest account from downloading or changing the settings on XP?
Sounds like you need to use the policy editor, as described here:





http://support.microsoft.com/default.asp...
Reply:make your account an administrator account