I'm running FC14 and GNOME and I just swapped out an Nvidia-based video card for an AMD/ATI based video card. The machine has a monitor with 1920x1080 resolution and that worked with the Nvidia video card. With the ATI card I'm trying to change the monitor resolution and other things. I can't find the system-config-display tool which I used on Linux machines for years. With the GNOME 'Monitor Preferences' tool, the highest resolution is 1280x1024, the monitor type is unknown, and it doesn't allow me to turn on a second screen.
My question: what do I have to do to properly configure this video card and monitor? I'd like to change the Monitor resolution to 1920x1080, and be able to set a second screen via the HDMI output (the video card has a DVI and an HDMI output, which I connect to two LCD displays).