I can´t see, what i am drawing in the model area, no matter what colour or layer i choose (this happens with Win XP as well as with Win 7). I just don´t have any visibility on the screen, i only see the background. But there must be s.th. on it, because if i make a frame over the whole screen i can see points that light up. These are the spots where i have made my clicks. So where and what do i have to adjust to see my lines and circles etc.??