Have a look at the setup on the 'puter that IS printing. If the printer is "networked" ie plugged in via ethernet you will need to set up a tcp/ip port.
The working 'puter should have a port pointing to 192.168.2.1.
This is where Windoze is daft ...You have to add a printer as a LOCAL printer and then add the tcp/ip port. In XP the second window of the setup wizard asks you to select a port ..this is where you create the new tcp/ip port and then proceed from there with driver disks/etc.