My name is Fayaz and I approve Interpol's download.
Far quicker than going in the registry. As aforementionned, takes a little getting used to, but you cant live without it after a while.
I do a lot of mouse clicking and dragging at work, and people are always impressed with how fast I can accurately move the mouse, use menus, drag windows, without using a single keyboard shortcut...
Without Windows interference, the movements are linear.. there's a 1:1 relation between physical displacement of the pointing device and the cursor on-screen. If you get good enough, you'll just look at where you want your mouse to be and the cursor will follow near-instantly.. for gaming, that's a plus as well.