Login Rights w/ Windows2000

Hello,

I have just recently become aware of a problem that I am facing in my Organization. I am unable to solve it…
(Administrator) account is being used by our techs thru out the locations, Problem be is that they are forgetting to logout.This leaves a mayjor gap in our security. So now I am setting the administrative rights for each user so that they can login with there own user name and password and not that of the administrator. But they are still on ocassions using that admin account.
How can i stop this. I cannot/willnot change the administrators password.

My question is….
Is there a way that i can set the administrators account up so that it can only be used on the server and not on any of the other workstations?