I haven’t played around with Bing Maps Control for Silverlight before, but as usual it is quite easy to start with. The only catch is that to use the Bing maps in your application, you need a Bing Maps Key.

Getting the Bing Maps Key

You can get the key from here (max 5): https://www.bingmapsportal.com/ just click Create or view keys and then enter in your info. I think the application name needs to be without spaces and as for choosing application type – see here: http://msdn.microsoft.com/en-us/library/ff428642.aspx.

Using the Bing Maps Key

If you have the key just enter it to your XAML code.