Hey guys, thank ahead of time for the help. I just purchased a used MacBook 5.2 with Apple care until Aug 2012. The previous owner doesn't however have any of the original installation disks but he does include a backup copy of Snow Leopard. Do I need the original installation disks or will the backup copy of snow Leopard suffice? *I don't know the difference between a backup version and original* And if I need them what are they and where do I get them? Thanks again.