Check out this link to disable the Touchpad. http://ubuntu.wordpress.com/2006/03/24/disable-synaptics-touchpad/
I tried it, but kept getting this error:
libu@toxicware:~$ synclient TouchpadOff=1
Can't access shared memory area. SHMConfig disabled?
I did add the SHMConfig option in the xorg file, but I guess I might have to restart the X server. But since I had other things running, I decided to put this off for another day ;) !! So till then.