Case conversion: IBM PS/2 Model 95
After reassembling the case, this is the final product. I'm pretty happy with the end result, although some things could have been done a bit better. I'm not the world's best craftsman I guess. I'm not using the case for my primary machine, as much as I love it, because it has no front audio/usb connections and the cooling/noise could be better.
The axial fan only circulates air within the case, it doesn't refresh it. I ended up turning it off anyway, as it makes an unpleasant, droning sound. I added a 92mm intake fan early on (don't worry, I removed the LEDs), but there wasn't really an exhaust fan to speak of. There was noticable heat buildup at the top of the case; after some gaming the top would be warm to the touch and the case temperature was more than 40 degrees Celius. To remedy this I added a slot cooler, which does a wonderful job of blowing the warm air out of the case. The case temperature has dropped about 15 degrees. I replaced the Tital slot cooler pictured with an Antec model which has a speed control switch (and even at full speed it's much more silent that the Titan). It would have been better to use a motherboard tray with a built-in 12mm rear fan, but that would have been more difficult to fit and expensive (ie I didn't have one lying around).
Originally I had a Pentium 3 based system in the case, but as I recently upgraded my main computer I put it's old innards in this case. It's now an Athlon XP 2800+ @ 3000+, 1GB DDR 400, ASUS A7N8X Deluxe v2 and Geforce 6800GT combination. Good enough for when I'm over at my parents.