Is it XP?
http://www.microsoft.com/windowsxp/d...powertoys.mspx
http://support.microsoft.com/?kbid=332003
http://www.theeldergeek.com/group_policy_editor.htm
Should help.
I think it's better to use the tools above to control access rather than try and remove stuff.
The kids will just reinstall in IMO.
It's also good to have control over what programs the kids can use. The parent(s) should be the Admin and the kids should have unique user names.