> Section "InputDevice"
> Identifier "cursor"
> Driver "wacom"
> Option "Type" "cursor"
> Option "Device" "/dev/input/event2"
> Option "Mode" "absolute"
> Option "Speed" "20"
> Option "USB" "on"
> Option "TopY" "0"
> Option "Topx" "0"
> Option "BottomX" "60550"
> Option "BottomY" "45700"
> Option "ZAxisMapping" "4 5"
> # Option "KeepShape" "on"
> Option "Threshold" "5"
> Option "Buttons" "5"
> EndSection
Stick this in your InputDevice section somewhere:
Option "Protocol" "IMPS/2"
Then you should be set.