Steam sounds like a very, very cool software distribution platform. Basically, they handle all the money, all the copy protection, upgrades, and a bunch of reporting for you. They mostly sell games, but also sell other pieces of software (like our music creation application.) Getting into their store sounds like a bit of a dog and pony show though (i.e. you need to win a popularity contest before they consider you.) Since I have never been through this dog and pony show before, I have no idea how (if?) it will end.
So, if you feel like clicking "Yes" (I would buy this game if it were on Steam) then check out this link. Or send me an email if you've been through the Steam cleaner before and have any tips.