[fc] two mouses in Xorg.conf

Hi,

I have a following problem in FC2. In RH9 I can set two type of mouses in XFree86: PS/2 and USB. I had a following lines in configuration file of X server:

section "ServerLayout"
	InputDevice "MousePS" "CorePointer"
	InputDevice "MouseUSB" "SendCoreEvents"
EndSection

Section "InputDevice"
	Identifier "MousePS"
	Driver "mouse"
	Option "Protocol" "PS/2"
	Option "Device" "/dev/psaux"
	Option "ButtonNumber" "3"
	Option "Emulate3Buttons" "no"
EndSection

Section "InputDevice"
	Identifier "MouseUSB"
	Driver "mouse"
	Option "Protocol" "IMPS/2"
	Option "Device" "/dev/input/mice"
	Option "ZAxisMapping" "4 5"
	Option "Emulate3Buttons" "yes"
EndSection

When I tried move this configuration to xorg.conf my X server dont' up and I must to set off a one mouse from xorg.conf. Now it looks like this:

Section "ServerLayout"
	InputDevice "MouseUSB" "CorePointer"
EndSection

Section "InputDevice"
	Identifier "MouseUSB"
	Driver "mouse"
	Option "Protocol" "IMPS/2"
	Option "Device" "/dev/input/mice"
	Option "ZAxisMapping" "4 5"
	Option "Emulate3Buttons" "yes"
EndSection

How I can set up two mouses in xorg.conf file again?

regards,

zbig