Section "InputDevice"
        Identifier      "Synaptics Touchpad"
        Driver          "synaptics"
        Option          "SendCoreEvents"        "true"
        Option          "Device"                "/dev/input/mice"
        Option          "Protocol"              "auto-dev"
	Option		"LeftEdge"		"60"
	Option		"RightEdge"		"900"
	Option		"TopEdge"		"60"
	Option		"BottomEdge"		"511"
	Option		"MinSpeed"		"0.2"
	Option		"MaxSpeed"		"0.9"
	Option		"AccelFactor"		"0.07"
	Option		"SHMConfig"		"on"
	Option		"RTCornerButton"	"3"
	Option		"LTCornerButton"	"2"	
EndSection

Section "ServerLayout"
	...
	InputDevice	"Mouse"
	InputDevice	"Synaptics Touchpad"
	...
EndSection