Access Printer to another computer or via internet

hello all,

I recently visited an office where a simple network existed.

There are four computers connected to a D-link Switch connected to a broadband internet connection.

Question: The computers are connected to internet directly (via a switch) and i want to add a printer ( HP laserjet 3055 network ready ) and make it shared between the computers. Looking the best way to approach the problem.

Thanks
Ankesh