Using an external monitor with a Sharp Netwalker

Since I have my first ultraportable linux device(hp jornada 680 with Jlime) I always dreamed to not have to carry my laptop to do conferences and workshops, and do them with what I carry on pocket directly but I had no found any solution than fits, until now :)
Here is the steps to make the Sharp Netwalker use an external monitor or a projector:

Needed Material :

• Sharp Netwalker PC-Z1
• USB to VGA converter sisusb driver compatible(Example:Startech USB2VGA2)
• A monitor or a projector

STEP 1
First we have to do is change the default /etc/X11/xorg.conf, file here you can download mine:
If you have no changed your xorg.conf file you can copy&paste the below instructions in a console, check your are connected to internet first.
cd /etc/X11
sudo mv xorg.conf xorg.conf.original
sudo wget http://www.tuxbrain.com/downloads/netwalker/xorg.conf

If you take a look on the xorg.conf file you will se the following lines

Section "ServerFlags"
Option "DontZap" "False"
EndSection

This lines enable the classic Ctrl+Alt+BackSpace key combo to to restart X server (the graphical manager) without need to restart the full device. This key combo is disabled by default in Ubuntu 9.04 ,and I have missed it a lot. I you don't like it feel free to delete this lines and restart X as you consider better..
  This will be useful to enable the dual-screen once we connect the USB to VGA converter.

STEP 2
Conect the converter to the Netwalker and the VGA cable to the converter

STEP 3
Restart X, due we still using the old configuration, we still have disabled the key combo so in a console write the following

sudo /etc/init.d/x11-common restart

Once restarted you can use the key combo and the monitor will show the same desktop as you have in the Netwalker but without icons, take in mind is a different working area to acces it move the pointer beyond the right limit of your LCD screen on the Netwalker and you will see the pointer moving on the monitor, select the app you want from the app menu, to return to the LCD working area you only have to move the mouse beyond the left side of the monitor.

To return to left the dual-screen , disconect the adapter from the USB port and restart X  (Ctrl+Alt+BackSpace)
and when you want to enable the dual screen again connect the adapter and restart X easy isn't it :)

Here is a video demo

Howto based on this document
USB2VGA - Community Ubuntu Documentation