This is FYI.
Running CS3 with Vista on LCD monitor and had trouble directions in some areas of ACR being blurry.
I, with some help over at NAPP, traced the problem to the fact that I cranked the resolution up to 1920x1200 resolution and had to raise the font size so I could read it. It turns out that at that resolution, the font size must be less than 111 dpi for those directions not to be blurry. Hope this saves somebody a lot of time.