If you are interested in trying out this first early drop of
IronRuby, you can download the source and build it here.
You can then download my WPF sample above and run it
yourself here (note: you must have .NET 3.0 or 3.5 installed - since
those deliver the WPF APIs). To learn more about WPF, I also highly
recommend Adam Nathan's excellent WPF Unleashed book (read the review comments on Amazon
to see why).
Hope this helps,
Scott