Initial set-up help please

Okay,here's going to be my "intended" set-up, I just don't know how to make everything talk to each other:3x19 inch LCD as the cockpit (VC as well) (call them 1,2,and 3), an overhead LCD for the Overhead panel (PMDG (call it 4) and a laptop with charts.My computer is a Dell 8400 with 1 GB RAM, and a nice XFX GFORCE7600 256 RAM. It's running stuff beautiflly now, with PMDG running (737) at around 60 FPS on one monitor (19 inch)My video card has 3 outputs (DVI/S/14pin). I guess I could try and put all three monitors through the output on the back, or add another video card to the computer??What software/hardware will I need?Please