I am currently working on a iMac G4 with a bad Logic board(Motherboard), a replacement board is out of the users price range, so I am currently gutting it to upgrade a Desktop G3. I've already added the Hard disk and the Ram, I tried switching the dvd-r(the G3 only has a dvd/cd-rw), but the G3 will not recognize the drive, I am assuming the drive is bad as well, but I didn't know if there was something i need to do to the G3 to make it work? Also wanted to know if it was possible to switch the processors? the G3 is only a 400 Mhz and the iMac G4 is a 800Mhz. I rarely work with apples so i'm not sure if the sockets are the same, and not even sure if they are compatible. I also realize that this next question is a not really possible, but I have to ask just to make sure. Is there any way to take the LCD screen of the iMac and use it as a second monitor. I realize i would propable need the logic board to do this but want to know if anyone knows of any mods. Is there anything else that I would be able to gut out of the iMac and use for the G4? Thanks Sparks-Lit.