I have an early 2011 MacBook Pro and the display looks great under OS X, but is really washed out in Windows 7. I have installed all the drivers supplied by Apple and ran all the updates, but that didn't change anything. I think it's related to the color calibration, since Windows reports it's using "sRGB IEC61966-2.1" which was created in 1998. Yeah.
I tried importing the one from OS X for my display, but that just turned everything a dull brown. I also tried Windows 7's own display calibration wizard, but that just ended up looking horrible. What can I do to get decent looking text and pictures in Windows on this thing?