You can use GeniusConnect for that;
http://www.howto-outlook.com/addins/...genius_connect
It offers a 2-way-sync between Outlook and your database.
--
Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
http://www.howto-outlook.com/
Outlook FAQ, HowTo, Downloads, Add-Ins and more
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"Titus" <(E-Mail Removed)> wrote in message
news:302FFA07-9B64-4BA5-9F4C-(E-Mail Removed)...
> Hello,
>
> I'm designing a customized business management application (C#.NET with
> SQL
> dB) and would like to make use of existing contacts already stored in
> Outlook. Is there a way for the app to sync contact data with Outlook?
> If
> so, how?