Looks like the site redesign hated my links. They're fixed now.
My CPU fan blows down onto the motherboard. I've always thought this is preferable to help keep motherboard components cool. The case fan works well. If you have the modding skills necessary it is cleaner to get the fan inside the case, but for me, it was the easiest/most effective method. I put a very quiet 80mm fan in there, and run it at 65% or so using speedfan, and it keeps temps essentially exactly where they were with the old 70mm fan back there, but it does so much more quietly.
I started with the 200n at stock with a 9500 Pro video card (which was loud due to a lack of temperature controlled fan).
Where I stand now, after replacing the 9500 Pro with a x1600 Pro, a 90mm cpu cooler, 80mm exhaust fan, and 70mm fan inside the PSU controlled by a Zalman fanmate 2, my Ideq is finally quiet enough to be considered a legitimatly quiet HTPC. If you need more info I'm happy to help.
I'd love more info. Did you need to mod the CPU cooler at all? I'm leaning on the lazy side of modding because I have my eye on those MacBook Pro's, but I'd like to keep a working PC working.
My temps are sitting at 50-52c under load now, 47c at idle since I added a 6800GT, with a failing PSU fan. I'm shooting for 47 under load. At 53c under load, I get occasional lockups. I do occasionally take the 200N to LAN parties, so an external fan isn't ideal, but I have space to add a 4th fan on my windowed side panel on the RAM side of the machine.