Not really, unless you have an MSN account.

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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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>I have Outlook 2003 installed on 5 different computers in 3 separate
> locations. Is there an easy way to keep my contacts up to date on all 5
> machines?