Add maps to Outlook...
•Send your Microsoft Outlook® meeting requests with maps you can see in road, aerial, or bird’s eye view. *
•Use real-time traffic updates to help avoid accident or rush hour delays and find the best routes. *
•Print precise driving directions "to go", then save the details to view when you are offline.
•If you have installed Microsoft MapPoint® 2006, access your map in MapPoint when offline.

seems to work pretty well

microsoft.com