I installed a Geforce 6200 pci-e video card and everything went fine. Only problem it seems is now when I try to view any video clips/files, it gives error message:

Error opening/Initializing the selected video_out (-vo) device.

I can hear the sound but nothing is showing. I'm using the nv driver with Sid and kernel 2.6.18-4-k7. Other players such as Totem & Xine works fine.

Any ideas on fixing this?