http://www.microsoft.com/protect/pro...eadystate.mspx
Windows SteadyState is a download for Windows XP that can help protect your family from inappropriate Web content and contact on the Web. Windows SteadyState also protects your computer settings from unwelcome changes by your children.
You can download SteadyState at no charge to people using genuine Microsoft Windows XP.
Windows SteadyState can return your family computer and hard disk to the condition it was before your children changed it. You just restart your computer.