To configure your mouse (or reconfigure your mouse after installation) enter the command /usr/sbin/mouseconfig. Scroll down the list with the arrow keys until your mouse type is highlighted. If you have any mouse connected to a PS/2 style port you should select PS/2 as your mouse type. If you have a mouse connected to a mouse port on an ATI video card you should select ATI Bus Mouse. If you have a 2 button mouse and want to emulate the third (middle) mouse button with a simultaneous click of the left and right mouse buttons use [Tab] to move the cursor to the Emulate 3 Buttons checkbox and press [Spacebar] to toggle the selection.