You can use the ASUS key for your VISTA, Ultimate key for Ultimate Vista, Home Premium key for Home Premium Vista, and so on... X
yea I've been trying to find a Toshiba key every where with no luck, it's odd, keys are everywhere for other brands. Thats why with my Tecra S2 I didn't request Toshiba slic, but Asus, if I ever get a key i'll let you know, my eyes are always open.
Maybe you should know that different slic cert uses same oem keys, so it should not be a problem asking for a different slic or cert, as many oem brands use same oem product key.