The "To Do Bar" is a new feature in Outlook 2007.
There may be a third party addin which gives you this functionality for
Outlook 2003.

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Thanks,
John Guin
OneNote Test Team
http://blogs.msdn.com/johnguin
> With Outlook 2007, when reading email, you can have a calendar pane open
> which shows the calendar, and the next few appointments coming up.
>
> Can Outlook 2003 do the same thing?