Hi Littleriver,
Yes it is possible. You don't mention what OS you are using, or which mobile
device either, so it's a little hard to give specific suggestions.

But I'm suing Outlook 2007 on Vista Business Edition and am able to sync my
Dell Axim X51v OK.

The Axim has MS Windows Mobile Version 5.0 OS5.1.70 and I'm using the
lastest 'Windows Mobile Device Centre software for Windows Vista
(v6.1.6965).

There were certainly some issues with the initial release of MS Office 2007
Outlook, but after updating to the SP1 release of MS Office, I've had no
problems at all. I can sync the Calendar in both directions, as well as
other things like Contacts, Tasks etc.

If you could post the software versions that you are using and the exact
error messages, if any that appear that would help to diagnose the problems
you are having.

Jonathan R. Portwood.
Professional Quality Support & Assistance.
"Assisting NGO's with IT Services".