How To Bolt On Chargespeed Wing?

Hey guys, my Rep.chargespeed spoiler just came in(HELL FREAK YEAH!!!!!) and i was wondering does anyone know how to anyone bolt it on. I know it goes over the or covers the stock one but how do i make it stay on? I was told to just screw the top tabs of the chargespeed on to the stock spolier. So do i just screw it on the top edges where it connects to the trunk or what? HELP ME PLZZZZZ....thx