Sharing a non-PostScript USB printer

I'm using OS X Server 10.3.2, with the GIMP-Print drivers supplied by Apple, to print to a Canon BJC-55. Locally, it works successfully (as it does on my PowerBook). However, I'd like to share the printer from my Server machine. According to the Panther Print Service documentation, supported printers include "PostScript printers connected directly to the server using the Universal Serial Bus (USB)" and it goes on to say "A non-PostScript printer connected to the USB port of a Mac OS X client computer can be shared using the Printer Sharing option in Sharing preferences." (page 8) OK, so I've gotten my PowerBook to share to the iMac (Server) without a problem. The PowerBook runs 10.3.2 client. Unfortunately, this is the opposite of what I really want. Since the PowerBook has an AirPort Extreme card installed, I'd like to be able to hit Command-P anywhere and have the iMac take care of the rest (of course, I'll have loaded a sheet of paper into the printer beforehand...) I tried setting up the printer in Server Admin anyway, and it does show up when I browse via Rendezvous for LPR printers. However, nothing prints and nothing shows up in the logs or queues. Browsing through localhost:631, I saw nothing about sharing the printer over the network. Am I out of luck, or is there something else I can try?