Shuttles and Heat Monitoring

So I just picked up a Shuttle XPC and decided to throw an ATI Radeon 9500 Pro in it. The 9500 has a built-on fan to keep it cool, so I was getting a little worried about the small Shuttle case keeping cool. I found a peice of freeware called Motherboard Monitor that will work for me, but I was wondering if there’s anything else out there that people like. Any suggestions?