I have Mac OS X Lion and a Logitech MX 518. I tried both SteerMouse and USB Overdrive and neither does what I wants it to do.
What I want to do is when iI press and hold button 4 on the mouse, it should repeat a set of characters such as 123, 123, 123 or 1111111 or 22222 or, really, anything I set it to. Is there any way to do that?