For all those who have started venturing into developing windows phone applications, there are quite a few samples utilizing Silverlight, but the XNA content has been a little bit light.     (We are working on getting some more XNA VB samples online). 

But for those wanting to see a nice VB example of XNA development,  the Blackjack sample written in VB is now online.   This sample shows a single application which has been written to target all three of the XNA platforms (windows, XBox 360 and windows Phone) with a simple game that is easy to follow the code.

http://create.msdn.com/en-US/education/catalog/sample/blackjack

Enjoy

Spotty