Dual display on linux using nvidia driver

Section "Device"

Identifier "Videocard0"
Driver "nvidia"
VendorName "Videocard vendor"
BoardName "NVIDIA GeForce FX (generic)"
Option "NoLogo"
Option "TwinView" "true"
Option "ConnectedMonitor" "CRT-0, CRT-1"
Option "TwinViewOrientation" "Clone"
Option "HorizSync" "CRT-0: 31.5-90; CRT-1: 30-96"
Option "VertRefresh" "CRT-0: 60-60; CRT-1: 75-75"
Option "MetaModes" "CRT-0: 1600x1200, CRT-1: 1600x1200"
Option "NoTwinViewXineramaInfo" "0"
EndSection