Hey Guys. I'm trying to figure out how to adjust the brightness on my laptop. The manual says to Press the (Fn) key and either the up or down arrow. However I don't know what the heck it means by the Fn key. I think it means one of the F keys up top. You know F1 through F12 but I have no idea which of those I should push. Anyone know? Cuz it's just bugging me.