Actually, I do read, and I did a search for "product key" and "registration"
and didn't find a clear, authoritative response. (Just because one person
answers with what they THINK is the solution doesn't mean it's gold. I have
seen lots of solutions to other problems in this newsgroup that are pure
fiction.) I also read my setup options and my Vista DVD gave me several, one
of which was Home Premium, so that's the one I took. Now, I acknowledge I may
have missed some other warning to install only Ultimate, but I didn't see it.
Just for my edification, and perhaps for that of others, where exactly was
the instruction to install only Ultimate?