Hi Daniel PIper,
Attached is a sample project showing you an approach to your problem. Review it and tell me if it works for you.
On a side note, I'd like to inform you that we've just released an online tool that allows you to reduce the size of your Silverilght applications. For more information, please visit http://blogs.telerik.com/blogs/posts/10-06-10/telerik_assembly_minifier.aspx
the Telerik team
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