I have an old iMac, PowerPC running Tiger. I also have a MBP running tiger. I cant seem to find the discs for the iMac but i desperately need to reinstall the OS because its running like total garbage. I was wondering if i could use the restore discs from my MBP (Core 2 Duo) on that iMac? If not, where can i get discs to do a restore? or can i do it on the computer without a disc at all? I just need to start fresh.