Have you checked you digital locker?
From Microsoft...
"A personal digital locker is created for you when you purchase a Windows
Vista upgrade. Your digital locker stores your product keys and purchase
information which, when used together, allow you to reinstall your upgrade
if necessary. A copy of your upgrade is also stored in your digital locker.
To access your upgrade in your digital locker for recovery:
Click Start, and then click Control Panel. Double-click the digital locker
icon. Alternatively, you can go directly to the Digital Locker website.
"
https://digitallocker.windowsmarketp...spx?limode=wau
(6th time I have pasted this exact text into a reply to someone)
"PU-CSMOLBIO" <PUCSMOLBIO@discussions.microsoft.com> wrote in message
news:970EB565-B661-4C97-84AF-EC08CE071B34@microsoft.com...
> I have a new computer that came with Vista Home Premium. I want to upgrade
> to
> Ultimate. I ran the Upgrade application and purchased an Ultimate upgrade.
> It
> says that I need to wait 2-3 weeks for the upgrade disk and product key. I
> already have a Windows Anytime Upgrade DVD from another computer. How can
> I
> get the product key emailed to me so that I don't have to wait 2-3 weeks
> for
> a disk that I already have?
> --
> Princeton University Molecular Biology Computer Support