Alexander> In /etc/X121/xorg.conf: Alexander> Section "InputDevice Identifier "Mouse0 Driver "mouse Option " Alexander> "Protocol" "IMPS/2 Option "Device" "/dev/input/mice Option " Alexander> "ZAxisMapping" "4 5 Option "Emulate3Buttons" "yes " Alexander> Additionally executing following command: /usr/X11R6/bin/xmodmap Alexander> -e "pointer = 1 2 3 6 7 4 5" When I do the latter (the xmodmap command), I get this: xmodmap: commandline:0: bad number of buttons, must have 5 instead of 7 xmodmap: 1 error encountered, aborting. Incidentally, I have this line in there for Protocol, and the mouse works okay (except for the add'l two buttons): Option "Protocol" "ExplorerPS/2" Any idea if there's a real difference between that and your line ("IMPS/2")? --Harlan