Installing Touchpad in Feisty Fawn

[Donald Metheny]

Have recently installed Fiesty Fawn on my laptop and am having trouble
        controlling the touchpad. Saw Touchpad in the repository and
        figured it would give me more control over the device. When I
        click on it to run, I get the following message:

        GSynatics couldn't initialize
        You have to set 'SHMConfig' 'true' in xorg.conf or XFConfig to
        use
        GSynaptics.
        
        I found xorg.conf but could find no reference to SHMConfig in
        it. Have not been able to find XFConfig. 
        Would appreciate some help on this so I can hopefully bring my
        touchpad under control.
        Thanx