Looks like the '5' key puts your credits in, you use arrows to maneuver, and the space bar is fire.
This gives me REALLY BAD IDEAS people..

This game would be too cool to have in my lineup. If anyone is interested in helping me to build one, which could be highlighted step by step on my home site, please let me know. I know alot of my readers would love to see this come to life!
VG