Shooting Gallery Game Tutorial

With the appearance of the TopGun II infrared light guns I'm really interested in creating a training game for my pistol competition organization. The TopGun II devices are just mice and work with 200 inch+ screens so I'm very much interested in working something out.

There was a fantastic game called Sports Shooting USA by Atomiswave that was quite good but not enough of a training sim for my tastes (and it only came in a cabinet with a 18 inch screen).

http://video.google.com/videoplay?docid=3721718100360664302 for the demo.

This would be a target based shooter, not live action, and the targets would be fairly simplistic. The above mentioned game is much more detailed than I'm interested in nd much more 3d than my idea needs to be.

For the most part I need to track targets and track where the mouse is clicked to determine if the target is hit (I think), but I confess to be *totally* clueless about game development et al.

Does anyone have a good resource or tutorial for developing such a game using TGE? I'm a programmer by profession so that part doesn't scare me, I lack the basic knowledge of how these types of games work (collision detection in 2D, etc). Any tips or hints on where to start are appreciated.

Thanks!