To nissmo300: Look at the 8th post in this thread, it shows the lower part of the case and the orientation of the rad/pump. To thorilan: The air is coming on from the front of the case. You can't see it very well, but the center divider on the bottom is cut out, which allows the air to flow freely to the back of the case to the two vantec stealth 80mm fans that I have mounted above the psu. My case temps are much lower than they were with my old case (generic full-tower steel case).
I must say that it is extremely easy to work, although I still have some clean up to do on the internals.
Shawn