Problem
Uninstalled an expired "Trial" version of Office 2007, installed the full VLK version. Tried to run the Office Updates. It selects Office 2007 SP1, but doesn't download or install anything, just fails with "Update was unsuccessful."
Solution
Check near the end of %WINDOWS%\WindowsUpdate.txt. If you see text like:
Update $STRING is "PerUpdate" regulated and can NOT download. Sequence $ETC $ETC $ETC
Download the Dial-a-fix fixer from here:
http://www.majorgeeks.com/download4899.html and save to desktop. Right-click on the .zip file and select Extract All...open the folder and double-click the Dial-a-fix.exe icon. Place a check in the box for the option titled "Fix Windows Update" under the heading WU/WUAU, then click the Go button at the bottom. Follow the prompts. When completed, try the Windows Update site again.