try this out
"Using my Pantone Colorvision USB color calibration unit, here are the settings I came up with for my particular unit. YMMV based on manufacturing variability, but for those without a calibration unit this is probably a good start.
Since this is supposedly an sRGB compliant monitor, normally just setting sRGB should be perfect, but that wasn't the case. These settings work much better:
(target sRGB 6500K of course)
Brightness 27
Contrast N/A (not available in DVI)
Color: User Preset
Red 36
Green 33
Blue 32
With any brightness setting the gamma was still too low (i.e. too bright) around 1.89. I solved this by using the nVidia driver color adjustment page to set the gamma slider to 0.91 which gave me a measured gamma of 2.05. This is still a touch brighter than sRGB but I couldn't get it any higher, and as the page below notes, 2.0 is a good compromise between Mac (1.8) and PC (2.2) gamma.
There is a good gamma adjustment page here:
http://www.photoscientia.co.uk/Gamma.htm"
worked really well on mine.