>Thank you, Craig. Is the bar on the left of the Outlook 2002 (with icons for Outlook Today, Inbox, Calendar, etc) is what you refer to as "Outlook bar.". I wonder how the Viewing Pane (whatever it is) is different from it ...
>

Yes, that is the Outlook bar.

The preview in the viewing pane can now be vertical. Microsoft claims it allows 43% more viewing area.

Look at http://www.microsoft.com/office/outlook/prodinfo/default.mspx