The response about the video card was overwhelmingly one-sided, so I decided to do a little research on the sound card. It's hard to find reviews on integrated sound, but what I found was quite encouraging. The intergrated sound competes admirably against low-end sound cards, and several articles said that it would take a $45 investment to get a better card than was already in the motherboard. So I guess I feel pretty happy with my surround sound integrated Audio. If I had more money, I'd probably get a better video card.
Thanks for the advice, everyone.
Dan