Hi I recently acquired a G5 powermac which has a GeForce FX 5200 graphics card. I have 2 monitors with DVI inputs and wish to use them both with my G5, if possible. the FX 5200 has one DVI output, and one ADC (Apple Display Connector) output. So I purchased an ADC to DVI adapter cable, but it doesn't seem to work. the G5 detects that the second monitor is present, but there is no display. the monitor in question is a Dell 2407WFHPC and works fine when connected to the DVI output. Any help appreciated!