Browse the Active Directory in Silverlight

Our Silverlight 4 / WCF RIA Services application uses windows authentication, but for one area we want the 开发者_StackOverflow中文版user to be able to select a user and further configure the security settings. SharePoint has a great PeoplePicker control that I essentially want to replicate.

Is there a way to browse the users in an active directory share in Silverlight? Or better yet, a people picker control for Silverlight?

Here is an overview of the PeoplePicker control for SharePoint: http://karinebosch.wordpress.com/sharepoint-controls/peopleeditor-control/

Thanks

In this Silverlight TV episode, Deepesh shows how to use Active Directory (near the end, if I remember right).

http://channel9.msdn.com/Shows/SilverlightTV/Silverlight-TV-44-Top-Four-Questions-from-the-WCF-RIA-Services-Forum