Hmmm, that ProdID on my system is for Microsoft FrontPage 2000 SR-1

My ProdID for M$ Office is HKCR\Installer\Products\904010001E872D116BF00006799C897E

Also since my 'InstallSource' is my SMS server, have no entry called 'LastUsedSource' under HKCR but do under HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{00010409-78E1-11D2-B60F-006097C998E7} have a 'InstallSource'. Mind you, mine is MS Office Pro.

I know back before SMS, when I was installing OEM and ShrinkWrap, it turned into a real nightmare to install SPs as it wouldn't accept just any CD.

Hope it goes better for you.
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