Hi, I haven't had a Mac since my Performa from the 1990s. I did help an elderly friend with a Mac about 10 years ago. But I guess I'm a Noob again on Macs. My 12 year old kid has never had a Mac, and was really excited to be given a friend's old imac G5 the other day. He thinks it's a 2006 model. Problem is that the Mac's owner wiped it completely, there's no OS. Thanks to an old friend, we now have 3 Mac OS disks on loan. The first and best is Snow Leopard 10.5: when we put that CD in, it won't install. We can get in, and access Disk Utility, etc., but we get a message saying that we have to have a version of 10.4 installed for 10.5 to work, or something like that. (Is there a workaround for that?) The second disk we have contains Mac OS 10.6.3. The computer won't boot at all with that one. Then we have a 10.3.5 disk -- but it is "bundled", or has bundled software, so we get an error message saying that one won't work. Do we have workaround options for getting an OS on this computer? Thanks very much! You could really make a kid's day (or week) if you can figure this out. He's tried pretty hard, watched at least a couple hours of YouTube videos already, trying to learn about this Mac issue.