What nVidia cards work in a MDD G4 on the AGP slot? I'm looking for a nVidia card that has two digital outputs, can drive 1920x1200 on at least one monitor, and can drive two monitors independently. I think for 1920x1200 it also has to have a dual-link DVI port, yes? no? (otherwise the graphics card uses a "reduced blanking interval"). Are any of the new nVidia cards for the Mac backwards compatible with the MDD G4 (like the ATI Radeon 9800 128Mb card is)?