Xrandr for dual head on IBM X200s

I tried to use xrandr on my new laptop (IBM X200s) and I had an error.
$ xrandr --output VGA --left-of LVDS
xrandr: screen cannot be larger than 1280x1280 (desired size 2960x1024)
It turns out that Fedora 10 has an X that doesn't need an xorg.conf, and therefore doesn't have one, so it's hard to put in the fix for this, which is putting in a Virtual line in the Screen.

This is what I had to put in xorg.conf to allow me to do dual head. Bear in mind that if you do this, then DRI will not work, and thus there will be no 3D acceleration.
Section "Device"
Identifier "Videocard0"
Driver "intel"

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
SubSection "Display"
Virtual 2960 1050
And that was all that was needed. I can now use my external monitor via xrandr.

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