Black screen freeze on red orchestra/rising storm multiplayer

I downloaded it once but when i tried to play it I got a black screen right after the intro movies play.Then, I uninstalled local content and re installed it. After the download was done i did a number of things: making sure the anti alaising was off in my AMD catalyst control panel, changing the resolution, and even waiting. By the way i hear no sound the steam drop down is frozen and i can Alt-tab out of it but i need task manager to close it. Can anyone help me actually play this game? I spent 15 bucks on it and would like to play it.