In my previous post I covered getting GEO spatial data into SQL and creating a service Silverlight can use to get the data in a usable format. In this post we are going to talk about how to create a Silverlight application to overlay geo spatial data on the Virtual Earth map. First thing first. Download the Silverlight Virtual Earth map control. Once you have done that start a new Visual Studio 2008 Silverlight project and add a reference to the Microsoft.VirtualEarth.MapControl and copy the following code into the XAML of your default window or page. < Grid x:Name ="LayoutRoot" Background ="White" > < m:Map Name ="MyMap" ZoomLevel ="4" Center ="39.36830,-95.27340" Grid . Row ="1" /> </ Grid > Make sure you add this namespace as well for the VE add-in xmlns:m= "clr-namespace:Microsoft.VirtualEarth.MapControl;assembly=Microsoft.VirtualEarth.MapCont