Gray/Color problems in Photoshop CS2

I'm having a problem with my grays in Photoshop CS2. I recently got a new monitor, a Samsung 914v if it's important. Every other program displays colors properly. But for some reason, when I'm choosing a color in Photoshop, the grays appear to be green. I've tried all sorts of color management stuff but I don't really know what I'm doing in it so it's not been any help. How would I fix something like this? On my previous monitor, I had a similar problem as well; grays appeared purple.

Here's a picture to clarify:



Any help would be greatly appreciated.

Calibrate your monitor by running Adobe Gamma.

I've already done that. The problem doesn't seem to be the monitor's colors. Just something in Photoshop.