they don't really do anything... at one time long ago they sometimes worked
as you expected... you can try resolving the address to the right contact
and the nickname might resolve.

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Diane Poremsky [MVP - Outlook]
Author, Teach Yourself Outlook 2003 in 24 Hours
Coauthor, OneNote 2003 for Windows (Visual QuickStart Guide)
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> I'm new to Outlook (2003) and am trying to understand the use and purpose of
> the Nickname field on the Contact Detail tab.
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>
> Neil