Hi Oscar,

>When I execute the SignOn methos of the MAPISession class, my Outlook Express is being launched. I'd like to have MSExchange taking care of the session.

My MAPI wrapper class is designed for MSExchange, and I remember having OE loaded on my system and it still used Exchange. By Default Message Controller, do you also see the button that says something like, Make Outllok my Simple Mapi Client?