While I hadn't had the time to peek into a recently obtained Imac G4 15", I couldn't resist this 17" G5, which has a flaw on its TFT, which was bundled with a semi-operated twin of its kind, both for US30.00. It came in a status which an OS X was halfway installed and is now demanding for the 2nd disc to be inserted! I inserted a Disc 1 of 10.3, also tried disc 2, both did not seem to get the process running. I checked EveryMac and it stated that for this model, 10.4 was preinstalled. I then tried a copy of 10.5, which had taken me to the installer screen. But I dnt want to install 10.5. I would like to install 10.3 or 10.4... I dnt have the 10.4 in a disc yet, I tried to give it a run via USB ...it ddnt work. What I wish to know is, whether this G5 which came with 10.4 preinstalled, will and would be able to run 10.3..... Cheers.