Desmond Chapman wrote:
Section "InputDevice"
        Identifier  "Mouse0"
        Driver      "mouse"
        Option      "Protocol" "Auto"
        Option      "Device" "/dev/wsmouse"
EndSection
Please try the following:
Section "InputDevice"
        Identifier  "Mouse0"
        Driver      "mouse"
        Option      "Protocol" "wsmouse"
        Option      "Device" "/dev/wsmouse"
        Option      "ZAxisMapping" "4 5 6 7"
EndSection
Cheers,
Jared