Using GPO four Outlook update

[Candie]

My users are currently running Outlook 2000 (that was not installed through a
GPO). I'd like to install Outlook 2003 and remove Outlook 2000 automatically
through a GPO software installation. I created a mst file and when I log in
as my test user, it says "removing managed applications, installing managed
applications". I end up with Outlook 2000 still installed along with 2003.
When I click on the 2000 icon, it starts an uninstall (I want this done with
no user intervention). When I start Outlook 2003 it starts the install. If I
start clean and Outlook 2000 isn't installed on the test box, Outlook 2003
installs successfully with no user intervention.

Thanks in advance for your help