Ti-4600 is a great card. Its only real drawback is that it is only DirectX8. I played Doom3 in 800x600 at High Quality with a TI-4600. How much does he want for it, hopefully $50 or less.
Built in video is pretty much horrible, it has its uses, but the TI-4600 would be far superior, and would help speed up your entire system.
My Desktop: <A HREF="http://Mr5oh.tripod.com/pc.html" target="_new">http://Mr5oh.tripod.com/pc.html</A>
Overclocking Results: <A HREF="http://Mr5oh.tripod.com/pc2.html" target="_new">http://Mr5oh.tripod.com/pc2.html</A>