Let's start by creating a new Silverlight application called "MasterDetail." Complete the following steps:

1. Select File, New, then Project to open the New Project dialog box in Visual Studio 2008.
2. In the Project types pane, expand either the Visual Basic or Visual C# node and select Silverlight.
3. Choose Silverlight Application in the Templates pane.
4. Name the project "MasterDetail," specify a location for the project, and click OK.
   Next, Visual Studio will prompt you for the type of hosting you want to use for the new project.
5. In the New Silverlight Application dialog box, select OK to accept the default name ("MasterDetailWeb") and settings, and create the project.