Has someone set up an HP DeskJet 812C with SnowLeopard or Lion? My parents have an old printer: an HP DeskJet 812C. I upgraded the OS on their iMac to SnowLeopard before checking if the printer was compatible. Unfortunately, it isn't. There's a Gutenprint driver for this printer, but the documentation looked rather involved. I didn't have much time to dedicate to the task.

Can someone simplify the gutenprint setup process for me? Has anyone successfully used an 812c with SnowLeopard or Lion?
They decided to not bother trying to get Gutenprint to work; they bought a new printer.