No, BCM is strictly a single-user tool.

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Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
>I am setting up the Business Contacts Manager Add-on of Outlook 2003 for a
> small enterprise. For the moment this will work in a single computer. Is
> there a way, if needed later, to handle the BCM in a multi-user
> environment
> with the help of an Exchange Server (like a public folder)?