Damian Schenkelman has an example on how to load modules that were packaged for remote module loading in a Silverlight OOB app.
Source: Damian Schenkelman's Blog
I created this sample a couple of months ago, and I thought might be useful for others. Here you can download the sample I put together using the Modularity QS from Prism 4. You can also download the necessary files separately (OOBModuleManager.cs and CachingXapModuleTypeLoader.cs)
Over the last week, Matias and I took some time to work on something a Prism Training Kit. We figured out that was one of the things that would be useful to learn Prism. Therefore, we decided to create a set of Hands on Labs that cover the basic topics addressed by Prism (if you can’t wait to download the TK, go here).