Re: FX-5500 vs. 6200
If he only plays old games, either card will be fine. But if he should ever decide to play some more recent games you should go with the 6200. I tried running HL2 on a 6200, and it looks very good, runs in 1024x768 with medium details and all reflections on.
Gigabyte GA-P55-UD4 - Core i7 860 2.8 GHz - 4GB PC10666 RAM - Samsung F1 1TB drive - 18x DVD RW - GeForce GTS 250 512MB (to be replaced) - Corsair HX750 - LianLi PC2110B case - Windows 7 64