2 screen connected to Linux Fedora core 6

[scorney]

Hello,
I'm looking into connecting 2 screen on my old desktop PC Compaq P3-733.

I use a PCI Video card for the main feed and now would like to use the onboard port too.

Here is the output of cat /etc/X11/xorg.conf :

[Mathieu@localhost ~]$ cat /etc/X11/xorg.conf
# Xorg configuration created by system-config-display

Section "ServerLayout"
Identifier "Multihead layout"
Screen 0 "Screen0" LeftOf "Screen1"
Screen 1 "Screen1" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
Option "Xinerama" "on"
Option "Clone" "off"
EndSection

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

Section "Monitor"
Identifier "Monitor1"
VendorName "Monitor Vendor"
ModelName "Daytek DT-1536D"
### Comment all HorizSync and VertSync values to use DDC:
HorizSync 30.0 - 54.0
VertRefresh 50.0 - 120.0
Option "dpms"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nv"
EndSection

Section "Device"
Identifier "Videocard1"
Driver "nv"
VendorName "Videocard Vendor"
BoardName "nVidia Corporation NV34 [GeForce FX 5200]"
BusID "PCI:1:0:0"
Screen 1
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1024x768" "1024x768" "800x600" "800x600" "640x480" "640x480"
EndSubSection
EndSection

Section "Screen"
Identifier "Screen1"
Device "Videocard1"
Monitor "Monitor1"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "800x600"
EndSubSection
EndSection


It seems like the video card 0 is not configured, but I did try with the Display setting, by seting up the double screen option, but when I reboot I got a few pop-up mentionning that cannot start xorg...
Any idea on how to set it up... ?

Thanks,
Sylvain