You need the ADC-DVI converter box, then it works OK. For the smaller CinemaDisplay, you need to make the graphics card driver do 1680x1050 pixels, else you'll end up with a black border. NVidia's driver lets you add the resolution manually, ATi drivers should auto-detect. I've seen the former at work, looks great.
However the very same LCD panels are also available in directly attachable DVI style, from Sony if I remember correctly.