Hi guys, I have a non-working iMac G4 model 15", 800mhz, 256mb, 60HDD. There are different imac g4 models and was wondering which are compatible with mine. Will a 17"/800mhz work? A 700mhz/15" will probably work? What about the 1ghz/17" model? What about replacing the cpu from a 700mhz/15" model with a 800mhz cpu? Will appreciate any inputs. thank you.