I have two monitors, both 17" LCD 1280 * 1024 plugged into a NVidia 6200
The important part of the log is
(EE) No devices detected.
The nv driver does not support this card. You could try using the vesa
driver, 2D only, or download the latest linux driver from the Nvidia
website. It works with my PCX6600 Card once you reconfigure X. You can
also use the debian packages to create the Nvidia driver.
More information can be found at
http://home.comcast.net/~andrex/Debian-nVidia/ which is what I used.
HTH
Wackojacko