If your graphics card has support for TV Out use the TV Properties to configure your TV settings.
The TV Properties is comprised of:
Use Image Quality to adjust the contrast, saturation, and flicker of your screen.
Use Color to adjust Hue, Saturation, and Temperature.
Note: This feature is supported by specific high-end ATI graphics cards only.
Use Screen Adjustment to set the video mode, enable overscan, and change the position and size of the screen.
Use Formats to determine how the TV signal is to be detected.