Python Super Stupid Space Invaders - 0.1

Wrote this to learn Python/PyGame, and now I think I know enough to be utterly dangerous with this language. ONWARD!!

Okay, first version that is a fully-playable game. You can kill the aliens indefinitely, and they can kill you, until you run out of ships. Instructions should all be clear on the first page. Comments to kurtdekker at gmail dot com, or post 'em right here!