I could use some help from some gurus out there... I want to set up Time Machine (have my external drive already mounted and running). But I DON'T want it to back up some things....like the OS X itself. If I have a major crash, I'll have to reboot from the CD an reinstall the software anyway. Should I just tell TM to ignore the SYSTEM folder? Are are there other areas that are 'common' that I should have it ignore as well? I'm still indecided what to do about my iTunes music. I'll have it ignore all my video media, but the music I'll probably include in the backups. Suggestions??