On your cooler. The fan that you have on top of your cooler, move it to the bottom instead, and have it push air toward the top of your case. Also, if you get a second fan 120mm I think is what the evo takes, you should have brackets for another fan, which you can place on top of the cooler where your current one is, and face it upward also.
You don't have a fan in the top of the case? Do you have holes for one perhaps? If not, then I'd say the fan that is currently on the top of your cooler, move it to the bottom, and have it push air upward to the top of the case and leave it that way, at least that way it would pull air off the graphics card too.