In CoD4, I've been a Commander (lvl 55) for a few months as of the time I type this. I don't have MW2 yet, but I will once either of the following happens:
1.) I build a computer that can run it; or
2.) Some random MW2 player manages to figure out how to Significantly Boost FPS in MW2 for those of us with Inferior Graphics Cards (i.e. me. >_<).