I just had to back mine up less than a month ago and it was 5.13 gigs in Runtime and the gods only know how much elsewhere in my Graphics Files. I split things up, labeled my CDs clearly and ran them through my CD organizer program before we reformatted the HD and upgraded the OS. Turned out that no files were lost, but now I have a 27 CD back-up, which causes me to sleep better at night :) (Except for tonight, obviously, since it's 4:15 AM here ;)