That's what I suspected...I have messed around with the settings quite a lot, but I will try again and let you know! Ok, just ran it again and the same thing happened. Tried messing around with the video settings like you said but nothing helped. After doing I ran the full version of Arma 2 from his external HD. Same thing happened. I'm not sure if this helps, but I am running Arma off my Macbook Pro with Windows XP parallels (I know I know...)