Automated win2000 Pro shutdown

I know that this question has been asked a million times, but I have not seen any real concisive answer. Does anyone know of a Active Directoy administrative template (ADM) file that allows for scheduling automatic workstation shutdowns?
What I am looking for is at a specific time, if a computer is still logged in or at the log in window, to shut down. I would like to have something that can be deployed centrally or run from a server if anyone has seen such a program.

Thanks for your help