Hey guys, really looking forward to playing this mod, but one question: I've got the steam version of Arma 2, without arrowhead. If I bought arrowhead alone on steam would i be able to play? Or do I need to get the combined operations pack ($10 more on steam) to play? I'm just trying to save 10 bucks if I can, but I figured I'd check before i spend the money. -Burrito