Replacing my HDD
I'm wanting to swap my HDD for a heftier one. I've never done it before on my macbook, but I know that it's not as easy as just pulling the old one out and putting in the new one. It's an Early '09 MacBook still running Leopard and just the other day, I ordered Snow Leopard so that I can upgrade to Mountain Lion. Is there something that I need to do before replacing the old HDD?
MacBook, Mac OS X (10.5.8), Early '09