If you read the description of gamerscore on Xbox Live it says its the combination of your scores for Xbox 360 and Games for Windows games. The achievements on Sins of a Solar Empire are setup the same way 360 achievements are, except they give you no score.

So, is there any way to raise your 360  gamerprofile's score by playing Sins? Or for that matter any Pc game, or is that a feature microsoft never bothered to implement or tell others about?