I have posted on Reddit about this issue and one person sent me here. I have 2 Powermac G4's I am wanting to refurbish. 1 powers on but gives me a question mark/folder error and the other doesn't power on yet and is missing a graphics card. I am wanting to pimp them out and clean them up as much as I can. Here are pictures of the 2: http://imgur.com/a/1Pekn I paid 40 for both as is. I don't know the first thing about how to load an OS on either, what parts are compatible, what OS would work best on them, How to make an install disk, etc. I also thought about gutting the insides of both and making hacks out of them, but I hear that might be a pain. I also heard I can get files from here: http://macintoshgarden.org/apps/mac-osx-mac-os-10-ppc can someone walk me through what I have, what they can do, and how to go about getting these babies up and running? Maybe what they could be used for? Here are pages on both mac's: http://www.everymac.com/systems/apple/powermac_g4/specs/powermac_g4_867_dp_mdd.html http://www.everymac.com/systems/apple/powermac_g4/specs/powermac_g4_733.html Also, neither have keyboards, mice, or monitors. I am using hand me down stuff for that purpose.