1. As the title implies it is an upgrade. You run Setup from your Vista
Business desktop, enter the AU pk, choose the upgrade option, and you get a
clean installation of Vista Ultimate (all installations of Vista are clean
whether you choose upgrade or custom). None of your files, settings, or
apps will be disturbed in the slightest.

2. Yes, you would start with Business again. MS recommends strongly that
you make an image backup of your system with it just the way you want it and
restore from that rather than reinstalling and reactivating a chain of
editions. I suggest you make two image backups, one for Business as a
fallback base system and one for Ultimate as your final base system before
further apps are added.

"dirty old man" <abc@def.com> wrote in message
news:uqhdJezOHHA.448@TK2MSFTNGP04.phx.gbl...
>I am sorry if these questions have been asked before, but...
>
> 1) If I have Vista Business installed and purchase a key through
> Anytime Upgrade for Vista Ultimate, can I just insert the Vista
> DVD, supply the new key, and lay down Ultimate over the Business
> install, or will I have to wipe out Business and install Ultimate fresh
> with the new key?
>
> 2) If I decide to do a complete reinstall of Vista Ultimate, will I
> have to first install Vista Business and then use the Anytime Upgrade
> key to install Vista Ultimate?
>
> dom
>
>