Probably not. I reset all the colour/gamma settings in the ATI control panel, and my previous BenQ G2400W worked with the same video card. I really don't want to go through the hassle of RMA again (don't ask), so I'll just wait until the next generation 120hz panels appear and then this one goes into the bin.
I've been using this monitor for almost a month now, by far the best 120hz lcd that I have used. The picture quality out of box isn't the best, but tweak the settings and its great.