using specific computers

Is there a different way to specify which computers a specific user is allowed to use? Here's the deal:

I need to be able to specify 76 specific PC's that the students are allowed to use on the network, Windows 2000 A.D. The user account settings only allows for 60 entries into the "specify computers" log for an account. They need to be able to use any of the 76 and not any of the others. Is there another option?

Add the 76 computer Accounts to a security group. Then give the security group permissions....