forgot to mention, both comps are using windows XP pro. I tried changing the workgroups on both to something new, but still no luck.

Thanks

Hey Kada

Firstly I doubt that you have done anything wrong. The only idea I have is that the IP address could have changed, due ot DHCP. How long has this setup been running. Do you know if the PCs are running on DHCP from the router, and is the full printer name on the problematic computer, (is it "Printer on <pcname>" or "Printer on 192.168.2.3". Which is most accurate?).

DHCP provides a new address after 3 days, and although in a small environment, this is less likely to change the allocation, it could be that the PCs no longer have the same IP, as when the printer was hooked up. Just get the IP of the PC with the printer, (make sure this hasn't changed, if you were taking it off a piece of paper, etc, for your ping), and on the other comp, Run

\\ipaddress

and see if the printer is in the list to conect to.

In order to check the PC's IP settings, type cmd in the Run box, then, use

ipconfig /all

Also, ipconfig /release and ipconfig /renew will (obviously) renew your IP settings.
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I'd say uninstall the firewall. I see you're behind a router so you won't need the firewalls anyways (unless you want the firewall for program control) because the router has it's own firewall. Turning the firewall off a lot of times has no effect.

For example if you turn the McAfee firewall of it will turn itself back on, on the next reboot,.