Fixes for RtCW Single player and Quake II OpenGL: – Windows 7 Forums [http://www.sevenforums.com/gaming/46278-fixes-rtcw-single-player-quake-ii-opengl.html] . Fixes for RtCW Single player and Quake II (default OpenGL mode): Step 1 (for both games): Download and install nHancer [http://www.nhancer.com/]. Step 2a (Quake 2): Run nHancer and