Calculating Combat or Something Like That

I’ve decided I’m getting into the game software biz. Well, not really a “biz” per se, but more along the lines of gaming aids. I’m mainly doing it as an exercise in programming. Professionally I work as a Flash Programmer and I’m learning C# as well. I’m thinking up these little gaming aids that I can use while playing some of my war games. I believe that once I get them written in C# or ActionScript, it shouldn’t be too hard to port to other languages as well. I see people using laptops with gaming aids on them but I’ve never really seen anybody using a Palm device. Ultimately, I’d like to have a collection of “combat calculators” or “range finders” for various games I own. It will be a nice way to keep my programming chops up. I'll be sure to post anything useful here.