I got a 2007 white MacBook, and I only have about 4GB HD space left. And that's after I did some emergency clearing out. It's obvious I need a new one, or to clear out more. I'm thinking both. So, I just got the free version of CleanMyMac, is that a good program to clear my HD out with? And, if I only want a drive that's 200GB-300GB, how much will a reliable one run me? I've seen 1TB drives for £70, but I'm not sure if they're the right size for the MB. If I do get a new HD, I can install Snow Leopard from an upgrade disc (they're the same as a normal one, aren't they?) then restore everything from a Time Machine backup just fine, right? One more thing, how do I go about installing a new HD? I remember reading it was pretty much the same method as installing new RAM, so it should be fairly simple, right? I've upgraded the RAM in this MB before, so I know the process. Thanks in advance!