NVIDIA GeForce GTX 460 vs 16 years old screen

[Kata Goto]

Hi everybody,
I am a french student, I am not good in english language,
I am trying to configure Xorg 7.5 on FreeBSD 8.1-RELEASE/amd64, I  have
connected an old screen (Pakard Bell, 16 years old, by a VGA-DVI) on my
NVIDIA GeForce GTX 460, but when I do X -configure, it prints "Number of
created screens does not match number of detected device. Configuration
failed."
The xorg.conf.new is : http://pastebin.com/d3Cia8Rx and the Xorg.0.log is
http://pastebin.com/iADMaaJX. Have you an idea to solve this problem ?

By advance,
thanks