I was try to play DO. I was installed it, check to options (cpu and no colour mouse). I was installed the intro crash fix. The game was stop flickering BUT the ground be black. When i started the game its flickering i use ALT+TAB and closed all windows, then ALT+TAB back. Flickering was stoped but the ground was black. Sry my english my hope u understand my problem and can u help me.