by switch, you mean... a hub or router of some type?

connect the printer to one of the PCs or Macs on the same LAN. Turn on printer sharing within Windows or Mac OS X 10.2 or OS 9.x. Printers don't share on 10.1.x, and 10.1.x won't see shared Windows printers without DAVE or perhaps another utility.

so if you're using Jaguar (10.2), you should be able to see and print to shared Windows printers or share them from your Mac and have others print to it.