Trying to use Compiz

I know this is a complete noob question but I’ve spent nearly 3 hours now and can’t find the answer.

The zoom feature for the cube requires the use of <Super>Button3, <Super>Button4,and <Super>Button5. I’m using a Toshiba laptop with one Windows key, one Menu key, and a two button mouse.

What key translates to <Super>Button5?

Hi, <super>Button5 = Windows key+Scroll mouse wheel down

Take a look at this: Compiz common keyboard shortcuts