GIYF. We probably can't give you a link to a Sony Bios, but there are networks out there home to one eyed, one-legged, sword-yielding, parrot-keeping types who can get you what you need. Go to their bay and search for the BIOS.

It shouldn't take you 5 minutes, it never took me 5 minutes! :-)

That said, someone probably will link you to one somewhere.