Building a computer for college. I'm going for mechanical engineering, and my computer will probably see some CAD and other 3d rendering programs. I was looking at a socket 754 3400+ w/ 1GB of DDR400 ram. I'm looking for a video card in the 80-130 dollar range, preferablly with a TV Tuner. I was curious if anybody knew how much a good video card would help with programs like these? I won't be playing any video games, so I don't really think its necessary to spend a lot of money on a video card unless It'd help. Thanks.