I currently have two ATI FireGL v5600 cards installed. I use to have it working so it recognized three monitors. Some weird stuff starting happening (monitor would flash black and go to 256 color mode whenever UAC appeared) so i uninstalled the drivers (this occured after it worked fine for a few months).
Anyway I know i use to have this working... i just don't remember what I did. Does anyone know if there are open source drivers or ones created by the community for ATI stuff?