k is a little complicated and you can mess you security up but anywya.(NOTE:i havent triedit or sure it can be done)
I think you need to have Win xp pro for this.
Control Panel > Admistrives Tools> Local Security Policy
If im not mistaken you can restrict anythign or aloow anythign for any users or Groupd Users you want. (NOTE the security word on this section)
Play aorund with it you ****ed up Format reinstall Windows.
I only use it to set my sister as a Power user instead of limited account.