How do you change wiper blades on a 2004 Mazda 3?

Specifically...I bought some Crappy Tire Reflex wiper blades...|||If you buy them at most national big name parts stores, they%26#039;ll put %26#039;em on for free. Be nice and tip %26#039;em a couple of bucks.|||Every wiper blade set that I have bought have the dircections on them. There are a few different ways they can attach to the arms, so it%26#039;s hard to say without seeing it.