^If you mean a stand alone card then I suppose a Nvidia Geforce 6200 & in the older AGP lot FX5200 would be almost similar comparable cards.Though each of them would have wee bit more power to handle the games as compared to the Xpress 200 chipset.Believe me you wouldn't want to play COH on these onboards or low end cards as it would crush them in one go.
The minimum requirement mentioned are just the bare minimum to get the game started & don't promise good frame rates even on low settings.So I suggest invest in a better card possibly a 7600GS which is going on sale in Bazaar section is quite a healthy deal IMO.Check it out if you may.