I was re-installing Snow Leopard on my MBP when my dvd drive went bananas and scratched up my re-install disk, then stopped working completely. I removed the optical drive, but now I only get the folder and question mark when I try to start it up. If I hold the option key while starting up I get a working cursor and nothing else... I tried removing my SSD and re-installing the original HD, which should be working, but I get the same result. Is there any way to install the OS without a dvd drive? Thanks in advance!