I have a Mac Pro (1,1) and am running World of Warcraft on it. Currently, my mac is equipped with a NVIDIA GeForce 7300 GT video card, and I am considering upgrading it to something a bit stronger. There is a thread on the wow forums that lists a number of cards, but it is over three years old, and may be out of date. (The card that it suggests for my machine is an ATI Radeon X1900 XT. Is this still a valid suggestion? Or is there a better card that I can get for $200 or less? Thanks!