I just purchased a 30inch ACD and have the ATI Radeon 9800 XT. It won't power the display and I called my local apple store and they sold me the NVIDA 6600 as the best option. Only problem is that the 6600 doesn't fit any of the AGP or PCI slots. Does anyone know of a graphics card that I can add to my machine and power a 30inch ACD? one note, I don't want to spend too much as I am going to be buying a new mac pro once Photoshop CS3 comes out. Thanks for your help.