The Rodent Mac Infestation Here I come to save the day! Will it be another hockey puck?On Tuesday, Apple introduced a new "multibutton" mouse, called the Mighty Mouse. The mouse looks like a slightly modified version of the mouse it replaced, except it has a noticable "Scroll Ball" in the center. The $50 mouse still has one big mechanical button, but touch sensors can tell if you're left or right clicking. Two pressure-sensitive controls on the sides can be used for another function. The Scroll Ball can scroll in any direction, and also is clickable. Unfortunately, you must have OS...