I have to clean install Tiger because when I tried to upgrade it could not verify my disk. I tried to repair the volume in Disk Utility but it didn't work. So, I guess I have to do a clean install which will wipe my hard drive. I'm backing up the files I really need, of which there are not many. I figured I could later use one of those programs that puts your iPod music back on your computer, so I'm not going to bother backing up my music. But will iLife still be there if i do a clean install? Do I need to back up my entire drive? All I have is a couple blank cds. I'm not going to do it until I know exactly what will happen. Please help.