Configuring CUPS for remote printers

I'm trying to use CUPS, to print from my notebook computer (SuSE 9.1), via VPN to a printer connected to my desktop system (SuSE 9.0). However, I don't seem to get indication from CUPS on the desktop system, that it's receiving the print jobs. I believe there's a setting in /etc/cups/cupsd.conf, that allows CUPS to only work with local printers, but I'm not sure what it would be. I can print from the notebook, when it's plugged into the same LAN as the desktop system. Any ideas? tnx jk