See http://www.slipstick.com/addins/groupcontacts.htm for various approaches. Your options will depend on your version of Outlook, etc.

Signature
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
> Hi,
>
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>
> Thanks for your help