How do I make full use of a generic 6-button mouse? Somebody gave me a 6-mouse button. I want to make full use of the extra buttons as opposed to just using the basic 3 ones (left, on-scroller, and right buttons). First of all, I want to know where the buttons on the mouse are mapped to currently. I'm having trouble finding an app that will let me see what functionality they are mapped in. Next is how do I actually remap them?

I'm on Snow Leopard 10.6.8.
You can use a tool like USB Overdrive to map various functions to the buttons on your generic 6-button mouse.