Care to help a noob who wants to move up?...

[Movieguy]

I've been playing this for a while now, and I've pretty much mastered most of the begginner and easy level songs, since I've played the same ones over and over again. I want to master the harder ones, but I still can't last 5 seconds in those things, hehe. My problem is that all the arrows come at such a rapid fire pace for me, they're usually too close together for me to figure out when I should press what, and I keep mixing up my keys, always pressing up when I mean to press down. It's crazy. Funny, but crazy.

Well, I'm not the type to give up, so I'm gonna keep trying to move up from my familiar song pattern. Anyone have any advice on how to last more than 5 seconds on the more challenging songs? A certain way you use the keyboard or anything? Just curious.