[url]http://support.microsoft.com/kb/930985/en-us[/url]

"Upgrade installation keys are blocked when you start from the Windows Vista
DVD"

You have an upgrade disc. Either start the installation from within Windows
Vista, XP or 2000, or get the full version or OEM disc.

"Jim" <Jim@discussions.microsoft.com> wrote in message
news:0633BBB4-C5D9-4B6B-8585-ED6C3D3F74EB@microsoft.com...[color=blue]
> Two weeks ago I upgraded my Windows Media Edition to Vista Home Premium.
> Then went through two weeks of nothing but problems. Today I performed a
> Clean Install with the same Vista DVD that I used two weeks ago.
> Everything
> works great, except that I am unable to activate it. After spending 3 1/2
> hours talking to Microsoft Tech Support they tell me to reinstall XP and
> perform the upgrade again.
>
> Does this sound logical?
>
>[/color]