New members can authenticate using the same password in Active Directory (does not need to authenticate 2 times) one in windows machine, other in web application (WebWizForum).
What i try to say, it's :
1) can authentication be possible using IIS (integration with Active Directory)
2) after IIS authentication, server variables have a user session like:
domainName\userID
3) with that "domainName\userID" can application (webwizforum) get eMail account from active directory ?
2) If Forum get the eMail's account from Active Directory and
2.a) if new => save their profile in database.
2.b) if exist and diferent then actualize database settings
2.c) if exist and equal => maintain database settings
If WebWizForum do that, if very interessing INTRANET users does not necessary authentication.
Becouse aplication WebWizForum see server variables and see inside their profiles what matching are must to do.
Just my opinion.