I've had my Mac for about three months, and I've not been backing anything up. I've downloaded something called SuperDuper to use to back things up (not paid for it yet though). I need to know what files I need to back up. I've got all my music, video and apps on discs, so I don't need them, all I'm going to need are settings, documents and things. I've got no idea what I need to keep my setting and things. Thanks.