We just installed RH 9.0 on a dell laptop with a Nvidia GeForce4 video card. We took the suggestions for video from the installation program. We ended up with a system whose window just takes up the middle third of the available screen. All the terminal windows that open up take up the entire system window. Nothing is created in the black two thirds of the screen surrounding the system window.
How do we extend the system window to take up the entire available screen?