Lock win 2000 console for users with administrator rights

Hello,
My win 2000 server has 2 accounts with administrator rights. I want to allow only administrator can log to console.How can prevent other user with administrator right from logging to console?

Thanks.

That depends... Is it another person or something like ASP.Net?

If it is another person, just delete their account or change their password and never tell them what it is.
If it is a System account, best leave it alone. Things like Framework may establish an internal admin account to make what it does possible and if you delete it, prepare to re-install Windows.