Actually this is exactly what i want to do. I have this crappy notebook set up on a coffee table and want to be able to use it with the lid closed kinda like a really crappy workstation, I cant do much else with it since I get about 10Mins of battery out of it.
When I put in the above command (into a terminal window) I got the following:
BTW I did backup the config file first as I always do.
brett@ubuntu-laptop:~$ sudo dpkg-reconfigure -phigh xserver-xorg
xserver-xorg postinst warning: overwriting possibly-customised configuration
file; backup in /etc/X11/xorg.conf.20080610104450