Office 98 components on Terminal Server

I'm trying to add the Expression Service component to an
Outlook 98 install on a Terminal Server. This component
is found in the Full Install only. As an administrator I
ran the Outlook install, selected Full Instllation, told
it this is for all users and let it run, then rebooted.

The Service got installed, but only for me. No other
users have it. They all get an error message that says
the service isn't installed and to install it via the CP.

Anyone have any idea why this component won't work for
any other user?

Jonathan