exactly. that's my conclusion, too. as windows is the main os where our products are sold to a good deployment process is a necessity. i'm also unsure if all those mainstream gfx cards and its drivers are going to support opengl. my tests showed that i had to update nearly every computer system before i could launch a bmax program at a reasonable frame rate... looks like distributing the bmax based products need a warning sign that the client has to install the latest drivers first - even if he has directx 9.0c on his windows. any other "technical ideas" about this case?