Hello all, I recently ordered a new rMPB, and am looking to sell my "Late 2008" 15" MBP. I found some hints on the net about how to restore it to factory defaults before selling it, but it came with 10.5 and I've since upgraded it to Snow Leopard and now Lion. I don't have any disks for those (bought them as download-only). Does anyone know how to wipe the machine so it has a "fresh" 10.7 install for a better "out of the box experience" for the person buying it? I presume the OS updates are linked to my Apple ID, so does that mean I'm stuck?