>I used Nigel Coates MAPI class and I't works great on my computer (outlook express) but when I run the program on another computer (outlook 200) I get the following error.
>
>
>Class Definition MSMAPI.MAPISESSION.1 is not found.
>
>when the class tries to create a session.
>

You might check the registry to see if there's a different ProgID associated with Outlook 2000's generic MAPI object. You may have removed or retired the ActiveX automation obejct that held the ProgID MSMAPI.MAPISESSION.1 at some point during the install process for Outlook 2000. Look under the HKEY_CLASSES_ROOT for an entry that matches the ProgID.