Get the low down on
Silverlight Out-Of-Browser in Richard Costall's Simple Talk article.
Source: Simple-Talk
Silverlight can now be used to write a complete business application that can be run outside the browser. Such an application will probably need to to automatically check, and react to, changes to the network status, as well as automatically download and install updates from the server. It will need to be easily installed from the browser. Richard Costall explains how, with a complete example.