I just got a new macbook pro, and I want to wipe the hard drive on my old macbook so I can give it to a friend. The problem is I have lost the discs for the old macbook. Can I use the disc that came with the macbook pro to re-format the old macbook? The old one has an intel processor, and I have upgraded the OS to snow leopard so the current OS is the same as what the new one has. Anyone have any experience with this sort of thing?