New to Ubuntu: No mouse

[Ron Keller]

I've just installed Ubuntu 3.6 and I have no mouse. I'm hoping that 
someone can help me figure oput how to get it working.

If I boot the computer using the Ubuntu Live CD, the mouse is recognised 
as a generic serial mouse on /dev/ttyS0, and when the Ubuntu desktop 
comes up, I have mouse support  However, when I boot the computer using 
the installed version of Ubuntu ( installed from 
ubuntu-linux-i386-install cd), I have no mouse support on the desktop.

I rebooted into runlevel 1 and logged in as root.  I edited the 
/etc/X11/XF86Config-4 file so the mouse device was /dev/ttyS0.  But when 
I rebooted the machine I still had no mouse support on the desktop. Any 
help would be apprecited.  Thanks

Ron