Outlook 2003 & Groupwise?

[rwc]

For reasons that cannot be explained, I need to run Outlook 2003 and
Groupwise on the same computer.

The Groupwise is used for an enterprise wide Calendar, Contacts, and Email

Outlook is used for a personal calendar, and personal contacts (no email)

When I installed Outlook, I can't use the groupwise addressbook anymore. I
THINK this is because of an issue w/ the mapi.dll that outlook installs.

1. Can anybody confirm that this is true?
2. How do I disable outlook from overwriting groupwise's version of the
mapi.dll?

thanks!

rwc