Metaframe and Printer Security

Metaframe 1.8/SP2 and Terminal Server 4.0 Sp6.

My Goal: To make certain network printers visible to certain users.

I’ve added printers on my Metaframe server for all of my netware print queues.

I’ve gone into security for each printer and removed the ‘everyone’ group. Then added a group specifically for each printer.

My problem: Regardless of what group my users belong to, all users can see and use all printers.

Can anyone tell me what I have done incorrectly?

Thanks in advance.