Upgrade from gentoo to fedora 6

In this days I upgrade one of my operating system from gentoo to fedora 6. First I have problem with nvidia graphics card for two dual display. Finally I manage to get stable picture on both monitors. This is my xorg.conf.

# su -c 'gedit /etc/X11/xorg.conf'

Section "ServerLayout"
Identifier "Default Layout"
Screen "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
ModulePath "/usr/lib/xorg/modules/extensions/nvidia"
ModulePath "/usr/lib/xorg/modules"
FontPath "unix/:7100"
EndSection

Section "Module"
Load "fbdevhw"
Load "record"
Load "freetype"
Load "type1"
Load "glx"
Load "dbe"
Load "extmod"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "si"
EndSection

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "IMPS/2"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "yes"
EndSection

Section "Monitor"

### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Nec LCD1701"
DisplaySize 340 270
### Comment all HorizSync and VertSync values to use DDC:
HorizSync 24.0 - 80.0
VertRefresh 49.0 - 75.0
Option "dpms"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
Option "AddARGBGLXVisuals" "True"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
Option "CoolBits" "1"
Option "TwinView" "True"
Option "TwinViewOrientation" "RightOf"
Option "UseEdidFreqs" "True"
Option "MetaModes" "1280x1024, 1280x1024"
Option "SecondMonitorHorizSync" "24.0 - 80.0"
Option "SecondMonitorVertRefresh" "49.0 - 75.0"
SubSection "Display"
Depth 24
Modes "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
EndSubSection
EndSection