How can I change scroll direction in Snow Leopard? I've gotten so used to the Lion natural scrolling that using (for lack of a better term) unnatural scrolling in Snow Leopard and earlier is very annoying. Is there any way I can reverse it for OSes before Lion?
Yes you can, with Scroll Reverser. It's a free app that sits in your menu bar (you can hide it if you want). It works all the way back to OS X Tiger.