Ugg I just went through this experience. It was hell. First, download gimp + CUPS for OS X. Go into Sharing in system prefs and turn on windows sharing and printer sharing. Then follow the gimp instructions to set up the printer. On the PC end, tell it to print to that printer by following the instructions probably also provided. I think you tell it to connect to the printer \\"your computer's ip":631\printers\"printer name", but I'm not positive. You need to have a post script driver, but if you don't have a post script driver for your printer, you can just use a random one. I used the Laserwrite Color 12/640 PS driver that comes with XP and it works fine. It doesn't allow the quality adjustment of the normal driver, but it works.