Check out this article for a good walkthrough http://blogs.msdn.com/gzunino/archive/2007/09/17/hosting-a-wcf-service-in-windows-sharepoint-services-v3-0.aspx Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window You Might Also Like A fantastic example of what Silverlight 3 can do April 16, 2009 Using a Delegate/Anonymous Method with the Linq Distinct Extension September 8, 2010 A fantastic set of articles on creating a Silverlight web part for WSS and SharePoint March 20, 2009