tireless

setdisplay [width] [height] [color bits] {refresh rate} {-updatereg} {-allusers}

Changes your display settings. The [width] and [height] parameters represents the number of pixels on your screen. The [color bits] parameter represents the number of colors shown on your screen (8 - 256 color, 16 - 16bit color, 24 - 24bit color, and so on). {refresh rate} is an optional parameter that specifies the monitor refresh rate. If you specify the {-updatereg} parameter, the new settings will be saved in the Registry. If you specify both {-updatereg} and {-allusers} parameters, the new settings will be saved in the Registry for all users.
Example:
setdisplay 800 600 24 -updatereg
setdisplay 1024 768 24 90
setdisplay 1024 768 8