|You have to edit the group membership to change the rights on what that user is allowed to do.|
There isn't alot to restrict in there.
There is another way to restrict users from running specific programs. Therefore you have to edit the policies.
This description is for Windows 2000 but it's very similar to Windows XP.
You could also search by yourself by using google.
search for something like Windows XP user restrictions.
Please send a reply, if you solved the problem !!!