The BIOS is in charge of keyboard input until Windows, or the Windows
Install DVD, is loaded. I can get to BIOS Setup, with my wireless keyboard,
at least. I guess I was mostly thinking about the mouse, beyond BIOS
emulation. "Press any key to boot from the DVD" is a message from the
Windows DVD, though, not the BIOS (the BIOS, normally, doesn't give messages
of this sort). The BIOS, at this point, is out of the equation, because it
has booted the DVD. You're actually already under Windows' purview, so to
speak, and whatever driver functionality it offers at this point. The
"Press any key..." is actually Windows offering you the option to Install
from the beginning (or access Repair My Computer), or opt out. If you don't
Press any key, then the F8 stuff is engaged... If you are in the midst of
an install, then normally the F8 stuff flashes by pretty quickly, or is is
not seen at all, much like normal booting, unless of course, you hit F8. If
Windows is installed,you'll be sent on to normal Windows. (Or the Pick Your
OS screen, if you have a multi-boot situation).
So how does he access his install CD if he needs to "push any key to boot
from CD'' and the drivers dont load till the Vista DVD loads???
In short, while the message may be misleading, the DVD has been booted.