hmmm, maybe I am confusing it with a different card but I coulda sworn it had a fan, at least first gen ones - maybe not. Either way I never overheated it but every case is different. Mine was in a box with a p3 slot one cpu, is yours in a box with a hotter cpu?
you could, aside from what I mentioned above, get a spot cooler - antec makes a nice one. you can mount it anywhere and it has a flexible wire arm to aim the fan anywhere. you could point it at your gpu heat sinks, combined with a pci slot cooler it should do well