Why do you want to go with a 9800 ATi card? For a $215 budget NOTHING is going to outperform an eVga 6600GT overclocked or stock.
That 9800PRO is overpriced and pretty old...even overclocked to its max AND Flashed to an XT it's not going to perform as well as the 6600GT overclocked.
The price - performance of a 6600GT is far better than with a 9800PRO.
If you (or your bro) are an ATi fan then by all means spend all your money on a 9800PRO, but just to let you know the 6600GT will outperform it at the same amount of money and you will be losing money that way. that would kind of suck