You would need to set up an LDAP address list. The details depend on whether you're running Outlook in Corporate/Workgroup or Internet Mail Only mode. See http://www.slipstick.com/addins/services/ldap.htm

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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.slipstick.com/books/jumpstart.htm
> How do I configure Outlook 2000 to read the user info from
> a Windows 2000 server Active Directory? I would like to
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> Thanks
> Dave