Maybe you should watch this movie before: Sicko[^] I prefer good old Europe ;-)

if you think this is the direction you want to go this could be your development enviroment Silverlight 4 Entity Framework (Model) RIA/WCF enabled entities MVVM Pattern MVVM Light Toolkit Managed Extensibility Framework (MEF) Silverlight Toolkit Telerik Silverlight Controls (if more powerfull controls are needed) Visual Studio 2010 Expression Blend 4 Maybe the "out-of-browser" functionality could be interesting in your scenario also. Daniel

Evaluate Silverlight (V4). Might meet your requirements.