looks like this:
Section "InputDevice"
Driver "mouse"
Identifier "Mouse[1]"
Option "Buttons" "8"
Option "Device" "/dev/input/mice"
Option "Name" "TrackMan Optical"
Option "Protocol" "ExplorerPS/2"
Option "Vendor" "Logitech"
Option "ZAxisMapping" "4 5"
EndSection
I kept the logitech vendor option because all of the other options in yast rendered the mouse useless.