I had the same setup until a couple of months back when I lost the router due to lightning.
You'll need to set it up as a lpr printer under CUPS - use the recommended driver. Some time spent in
http://linuxprinting.org/ would be
well worthwhile. Also as prior post, plenty of info on the web.
I had a lot of trouble getting Mepis to talk to it originally, but a later Mepis update fixed it all.