Silverlight Toolkit was updated in the March 2009 release with Visual Basic examples added. My compliments to Silverlight Team!

Here is what Microsoft says:

The Silverlight Toolkit March 2009 release is enhanced with Visual Basic source code for both Silverlight 2 and Silverlight 3. The Toolkit is a collection of controls, components and utilities made available outside the normal Silverlight release cycle. It includes full source code, unit tests, samples and documentation for 18 new controls covering charting, styling, layout, and user input, in addition to 11 professional themes. The team wants feedback so join the forums and submit suggestions today.