The Input Tutorial has been updated to make it compatible with Xbox and Zune, where Enum.GetValues() is not supported. Scroll down to the point in the post where you see the [EDIT] tag. Once finished with the part between the [EDIT] tags, you will need to update the three input devices (Mouse, Keyboard, GamePad) to use the new method in their update functions. If you are having trouble, the MouseDevice in the post has been updated, and the other two in the links have been updated, and all the changes are in the project for the tutorial.