See http://www.slipstick.com/addins/contacts.htm#dupes for some nice free tools that do this.

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Sue Mosher, Outlook MVP
Outlook and Exchange solutions at http://www.slipstick.com
Author of
Microsoft Outlook Programming: Jumpstart
for Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
> How do I merge two contact records into one? For example
> I may have two records for the contact "Joe" with
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>
> Jim