IntelliSense and Validation of Design-Time XML

I had an XML file that controlled much of my application and I wanted to be able to validate it and get some Intellisense to making edits a lot easier.  I  used XSD validation which works great for my design-time needs, but note that the Silverlight libraries don’t have the code to validate it at runtime.  This is fine for my current situation, but may be a problem later.

Here is how I got it working:

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