Hi mfluckiger,
Unfortunately, these forums are for the support of Windows Genuine Advantage Validation issues. Your post does not appear to be related to WGA and such is off-topic (as well as way outside my area of knowledge).
I suggest reposting your question to one of the Vista Newsgroups at http://go.microsoft.com/fwlink/?linkid=42486 or go to http://support.microsoft.com for additional support options.
Very sorry I couldn't be more help,
Darin Smith
WGA Forum Manager