http://blogs.msdn.com/onoj/archive/2009/06/29/compose-wpf-applications-using-pre-defined-designer-created-views-xaml-appmodels.aspxTechnorati Tags: WPF , XAML , Sample AppModels are now live on CodePlex When you are facing the buy-vs-build question, often the reason for "build" is that you have a unique back end. You would probably be happy to use a front end you didn'ten-USCommunityServer 2.1 SP1 (Build: 61025.2)