I think I see something wrong with your XF86Config-4 file. Near the end you have this:
Monitor "Generic|High Frequency SVGA, 1024x768 at 70 Hz"
Notice how the device is missing. In those quotation marks, insert Geforce 4 (The identifier used in the driver section).
"Floating in a dream-like state, I am the emporer of a parallel universe." --Arch Enemy
My xorg.conf file