Hello I have a logitech click mouse, i find it great... having to install my OS again, where can i change what buttons do what? Where do i find it? its not in the place where i thought. Preferences > Keyboard & Mouse > Mouse Major problem is here... When i start up my mac, you hear the beep, then, after 1-2 seconds, you hear a small beep, then about 1-2 seconds another small beep, this keeps happening until it boots up, what do i do?