he TwinView feature is only supported on NVIDIA GPUs that supportdual-display functionality, such as the GeForce2 MX, GeForce2 Go,Quadro2 MXR, Quadro2 Go, and any of the GeForce4, Quadro4, GeForceFX, or Quadro FX GPUs. Please consult with your video card vendorto confirm that TwinView is supported on your card. (for a list of vendorsand their contact information, direct your browser to:http://www.nvidia.com/page/partner_support.htmlTwinView is a mode of operation where two display devices (digitalflat panels, CRTs, and TVs) can display the contents of a single X screenin any arbitrary configuration. This method of multiple monitor usehas several distinct advantages over other techniques (such as Xinerama):

The nVidia support pages