I originally purchased the C80 printer and was plugging the USB cable into whichever system I wanted to use it with. After a few months of that, it got real old. I then purchased the external print server (from Epson, C823781) and plugged that into the back of the printer. I then ran a cat 5e cable to my network switch and just had to set the computer up to use it. I didn't need to do anything to the printer to get it to show up. That is for both OS 9.x and OS X. I already had the latest Epson drivers installed onto my Mac (OS X), but needed to re-install them when I replaced the stock 20GB hard drive with the 60GB one (from IBM

). The printer is usable for just about any OS, from Mac to windblows (my game pc can print to it with only a 'minor' amount of work which was more then I had to do on the Mac).
I am not 100% sure, but you might be able to use that external print server with the C60, but I know it works with the C80. Even though the drivers are not there under the print server, they are under the set for the C80N. Essentially that is what you have when you plug the print server into the C80.
I like it a lot more then going through the USB cables, and since my portable phone operates on the 2.4GHz frequency, it interferrs with the Airport (and other wireless technologies) signal. The print server also operates with 10/100 Mb ethernet, so the speed is better through the wired network.
This may not be a cheap solution, but it works (flawlessly) and has not given me any problems since I set it up.