Hello all- Pietro Brambati just posted a great writeup on how you can install and run the XNA car racing sample application, and drive the car using the accelerometer built into the Windows 7 Sensor Development kit- with step by step instructions!

Check it out!

http://blogs.msdn.com/pietrobr/archive/2009/09/24/having-fun-with-windows-7-sensor-api-xna-game-studio.aspx 

From his post: