hi i'm a noobie here and i was wondering is there a way to reformat (completely erase everything and install a fresh OSX?) i've had my macbook alu for about 3 weeks now and i've messed around with it alot (installed and uninstalled a lot of programs) i dont like the fact that i have a lot of traces on my hd. i tried to do a reformat this past weekend but after the install i still had traces of the old programs on it. i.e. i had stuffit on there and when i tried to install it with the fresh osx it said that there was an older version still on the computer. i was just wondering how or if its possible to get it back to the way it was like when i got it in the mail? on another note... i was also wondering about osx snow leopard and if it will cost money or will it be a free update? i'm guessin its a completly new os and that it won't just be an update but just curious.