After thinking it over, the G5 just isn't worth the hassle. It's almost 5 years old, it's an architecture that's been forgotten, it's not especially quiet, and it's not especially energy efficient. If I'm wrong, please correct me.

When I received the machine, it had Panther loaded and contained all original hardware. My assumption is that if I return it to that state, it's going to just work and I can sell it on ebay. G5s seem to fetch a decent price still, so I can parlay that money into something else. I don't need another Mac, but it would have been an interesting change of pace. I could probably get a Mac Mini, but then I'd have to dump my dual monitor setup and get an external RAID box.

I have a couple Compaq 2.8GHz P4 small form factor machines that I picked up for $200 with legit Windows XP Pro licenses. It's likely I'll just put one of those to use.

Thanks for the help on the G5. It's a shame it didn't work out.