You don't have the install cdrom ?
My friend had a problem with their laptop and the Vista Business key
sticker was on the back but they had no Vista Business CD. I simply
downloaded the CD. It does get a little difficult legally, I mean
anti-download groups could say "HE'S DOWNLOADING STUFF....BAN HIM!!!"
but actually I have the key and all I needed was the CD, so really there
is nothing illegal about that...but I am not clued up with this legal stuff