I have a Dual 2GHz Powermac G5 from right when they first came out. Im going to be getting a 30inch cinema display and I know that I need to update my graphics card, I however, dont know which ones will support the full resolution of that monitor. I want to find the cheapest card that will support that monitor since anything out now will be an upgrade from whats already in my machine. So what cards should I be looking at? Thanks!