Creating a XAML from a template
- Select Mashup > Tools > Mashup Designer. You will be on a blank Designer canvas.
 - From the File menu, select New > New XAML from Template.
 - Click the tab that contains the types of templates you want to create. Depending on your configuration, options might be Document Archive or M3.
 - Click the template that is most like the mashup you want to design and then click Create.
 - Specify a location and name to the resulting .xaml file. For ease in locating the application later, it is a good idea to use a name that describes the task the application performs.
 - 
        If you are presented with a dialog box prompting you to associate the
          new .xaml file with the current project, click
            Yes or No depending on your preference. You
          can assign or re-assign .xaml files with projects at
          any time.
        
You will be on the Designer canvas and can begin adding controls to your application.