Goto the Printers Folder -- Right Click the Printer-- Select Properties.
On the Security Tab look at the rights assigned to each group/user.
Change the rights so that the groups/users you want have Print rights.
If you need to add a group to include everyone use "Authenticted Users"
Though you can use "Everyone" it is better security not to use it.
Remember that Deny overides Allow.
So if you allow a group and deny another group and the user is a member of
both groups they will not be able to print.
Regards
Mark Dormer