That is actually a motherboard chipset, are you using onboard video? If so then going to an add in card will really help and there are some decent 256MB and 512MB cards now, while they may not have the best GPUs or fastest RAM specs they still do very well.
I myself was running 2 ATI X1950 XTX's in crossfire configuration until they were both damaged in a move, so needing a replacement fast on a limited budget I picked up a cheap 512MB X1550 for about $40 and it works great for even the Source based games, especially so if your graphics settings are conservative (though next gen games like Bioshock or UT3 don't run nearly as well as my old setup).
Ya, I'm using onboard. I just need a card that will run CS and DODS with no problems. Don't need to be able to run the highest settings, but I want something descent. I don't see myself playing any of those newer games, or atleast not for a while. If I ever do, I'll just buy a new PC. Only problem with my current PC is that it lags hard in smokes in CS and doesn't run well on DOD:S.