Patricksgolden:
I have this same setup with a G5 connected to a home network and a linksys wireless router that I connect a new MacBook Pro and my daughter connects a dell laptop. I have two printers connected to the G5 which runs Tiger. I turned on print sharing as indicated by apple documentation. This did not work. I reviewed all the postings on printing using leopard and found the following posting very helpful.
OS X 10.5 client and NON-OS X CUPS server: adding printers, solved.
What I did was update the local CUPS configuration file by going to
http://localhost:631/ and editing the configuration file based on the above posting. Then I rebooted by Mac. The printers then appeared in the systems preferences default option. However they still did not work.
Finally I added them manually using the IP option and the LPD selection with the G5 IP address. Make sure you put in the print queue name. The only other change I needed to make was to use the Generic Postscript driver instead of the Epson driver(RX500). It then started to print. Using the Epson driver sent it to the printer however it completed without printing.
I hope this helps. I know it is not the step by step instructions, however if you look at the above thread there is more detail.