Yes, you are right Nuro. It is only the antialiasing to be set.
But CMBB runs so slow, that it is no real fun to play it. I hope i can find a solution for that. Although i bought CMSF and playing it at the moment, it would be nice to play CMBB too. Because it is a very different setting (as are CMBO and CMAK).
So please post it if you find a solution.