from Simu-Myke on the special announcements:
We've installed Vista on a machine here at the office and found a work around which is to disable the new Vista security feature called "User Account Control (UAC)" during installs/updates.
1. Goto Control Panel > User Accounts > Turn User Account Control On Off
2. Uncheck "Use User Account Control (UAC) to help protect your computer"
3. Click OK
4. Reboot
After you've got everything installed and working you can reenable the UAC feature and things should continue to work.
Myke
Give that a shot. It was posted on 2/2
~Dalkin~