Outlook Express upgrade

when you install outlook it will ask you if you want to upgrade your outlook express, thus combining them so if you change a contact in outlook it will change in outlook express.
i want to know how to know if the user upgraded his outlook express or not.
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You can see if a user is sharing contacts with Outlook by opening Outlook Express's address book. Go to the Tools menu > Options command. See which option (share or do not share) is selected.

Not sure if this actually answers you question but it might...
hitaiAuthor Commented:
i want to find out programaticly (check the registry / mapi etc.
Check the UseOutlook value under this key:

If it's a 1 (one) then OE is using Outlook's contacts.

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hitaiAuthor Commented:
thanks a million (or should i say 100)
is it always WAB4, does it change from one version to the next
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