I would like to buy the Radeon 7500 Mac edition but I'm starting to think that this is only available if you buy a new G4 from apple. Is this true? If so, does anyone have any experience with the Radeon Mac Edition card in a G4-400, the Sawtooth model? I am deperate as these kids are killing me on Red Faction cause I get too much lag from my Rage 128pro that came installed in the box. Help, I need to kick some ass!