vista wont install

I get past the license agreement and to the part where you need to pick a username and picture and optional passwords. No matter what combo I use the next will not light up to allow me to go on.

any suggestions?

My guess is that you either picked the wrong edition from the list (don't see how), or the CD key is somehow involved...if you entered it, try not entering it...if you didn't enter it, try entering it. Since the username portion is near the end of the install, it might also be a flaky DVD.