I found this great free miniatures combat game made by Neuicon. It works off of a simplified d20 system, much akin to Star Wars & D&D miniatures. My only quibble with the game is a minute one, in that I think the Protoss are a but understrength. I will be working on balancing them vs. the Terrans, and I am playtesting them tonight.
I will be using Halobloks Spartans and Flamethrower Marines as Terran Marines and Firebats, and using Halobloks Elites as Protoss. Should be a fun game. For a change, I am going into a new game feeling like I already know all about it, as I played a lot of d20 games in high-school/college, plus it has always seemed very intuitive to me. Should have some battle pics and report up tonight.
If you were interested in giving this game a shot, which I wholeheartedly recommend, you can find it at Starcraft: Tactical Miniatures Combat