Pay for printing

Does anyone know how to set up a printer where you have to pay to use it on a network?

We have a printer which needs to be set up so that it charges students for each page that they print…but it must be on a network. Any ideas on how this can be accomplished? I was wondering if anyone was aware of any software that can be used to monitor where print jobs come from and isolate them from other print jobs from other computers??

Current lan is 15 computers using NT 4.0 with Novell server 5.0 which handles the network access and printing. Can this be done just using Novell?

Any advice would be gratefully appreciated.
Thanks in advance,
Jeff