SuSe 9.3 Professional. I've tried editing the /etc/X11/xorg.conf, I've tried xmodmap -e "pointer = 3 2 1 4 5 7 8 9 10 11 12" and neither works. SuSe control center isn't of much help either. Anyone have any idea what to do? I use a MS Wheel Mouse Optical (USB). Computer is Compaq EVO n600c. My /etc/X11/xorg.conf (mouse related part) looks like this: Section "InputDevice" Driver "synaptics" Identifier "Mouse[1]" Option "ButtonNumber" "5" Option "Device" "/dev/mouse" Option "InputFashion" "Mouse" Option "Name" "Synaptics;Touchpad" Option "Protocol" "imps/2" Option "SHMConfig" "on" Option "Vendor" "Sysp" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" Driver "mouse" Identifier "Mouse[3]" Option "Buttons" "5" Option "Device" "/dev/input/mice" Option "InputFashion" "Mouse" Option "Name" "USB-Mouse;ExplorerPS/2 on USB" Option "Protocol" "ExplorerPS/2" Option "ZAxisMapping" "4 5" EndSection Any help much appreciated.