I was using a logitech mouse with my mac in which I could customize the tilt left/right functions to do whatever I wanted. I now have a Microsft Natural Laser 6000 mouse and it has the tilt functionality but I can't seem to customize it to do what I want; to be able to flip back and forth through spaces by tilting my scroll wheel left or right. I could do this with the logitech by setting tilt left/right to ctrl > or ctrl <. If I can't figure out how to do this, I'm just going to switch back to the logitech. Any help would be greatly appreciated! Thanks.