Let me know what they say
In windows XP there was never a "InstallDate" regirty option, even if there was one the add/remove programs never showed date installed. Starting with vista they added support for the reg key "InstallDate"
Maybe the 2 programs are using what ever tricks they do for XP on the newer OSs as well. But it was simple for me to make the tool in my repair. Loop through the uninstall sections, any reg section that doesnt have a installdate then add it and pull the date modified.
So for them it should be as easy as
"If InstallDate = "" then pull install date from somewhere else
else
installedOn = InstallDate
End if"
Shane