If you're still futzing around with XNA Studio and you are looking for some more tutorials then head over to
LearnXNA.com. There you'll find videos and code samples to help you getting started on your first masterpiece. John's already working on a new game were you play a lone space ship in the middle of an asteroid field and you have to blow up the asteroids and occasional ship to stay alive.
Thanks to
Let's Kill Dave for the link