My new computer is all put together now! It was more time consuming building this one due to the special heat sink for the video card that I had to put together. I opted for the Zalman heat pipe.
So far, I've booted up once, just to see if everything appeared to be working correctly. The machine is noticeably quieter than my current box, but it is not silent. Once I am sure everything is working correctly, I'll put the side of the case back on and decide if I need to do any more sound proofing.
Next step is to install XP Home!