Unprivileged user shutdown

[Cole Tuininga]

Here's a question for you folks.  

I manage a system remotely for some people who are not terribly linux
(or really, computer) savvy.  When they need to move the server for
whatever reason, they just hit the power button to shut it off.  

Obviously, this is not preferable.

What I'd like to do is to give them a user account that causes the
system to go into shutdown mode when logged into.

This is on a Debian Woody box.

Any thoughts on ways I can accomplish this?

-- 
Cole Tuininga <cole at tuininga.org>