The page at http://www.slipstick.com/outlook/links.htm#shortcuts has a few
ideas for this.

Signature
Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
>I have a couple users here in the office setup using shared calendars
> of their bosses. They access them using the File menu on the menu bar
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>
> Derek