Ok so here is the story...I got a new imac a month ago and decided to sell my old one (imac dual core 2, 2ghz, 3gb) to a friend of mine....in tying to wipe the mac clean he somehow deleted everything including the os. here is what i have tried 1) I tried to install from the original imac disks, after i choose the language it says "MAC OS cant be installed on this computer" 2) I tried to use time machine on my new imac and then boot the old one from that but it says "you can't restore this backup disk because it was created by a different model of mac" 3) I booted from my laptop (via firewire) then went in to disk utility and verified/repaired the disk, it then says "Volume appears to be OK....updating boot support partitions for the volume as required' but when i restart i am back to the file and "?" mark! 4) step 3 repeated and partioned and made sure guid was checked! 5) reset pram and nvram.... my brain is fried.....any ideas????