Outlook or Outlook Express can't share address books over a network - if you
have a server capable of ldap you can share them using ldap.

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Diane Poremsky [MVP - Outlook]
Author, Teach Yourself Outlook 2003 in 24 Hours
Coauthor, OneNote 2003 for Windows (Visual QuickStart Guide)
Author, Google and Other Search Engines (Visual QuickStart Guide)
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> How do you use one Contact list for multiple users on a network?