I have a laptop that i need to put vista ultimate on but it only have a cd drive and i have a portable dvd usb drive..... I updated the bios to the newest version and there is no bootable from usb selection on there. I want a clean install not a upgrade so can anyone help me on how to get a bootable vista cd that will let me then see the usb dvd as the e: drive where i can install it????? or something like that.