According the latest Windows Secrets newsletter
(paid version) there is a viable interim fix available with a solution being promised in the near future. The fix allows you to use Microsoft Update (instead of the older verions, Windows Update).
The interim fix involves applying two patches, in order:
First download and install the fix from KB 927891
Second download and install this update to the Windows Update Client
Apparently, even if you don't use, or plan to use, Windows Auto-update feature, you need this new engine to run Microsoft Update.
I haven't tried this as I am perfectly happy using Carol's fix (reverted to Windows Update and using Office Update to update my Office 2003 installation). I don't have auto-update enabled so this really doesn't bother me.