Rotating & Animated Banners

Looking to learn how to input some banners onto my website.

I need to know how to

#1. Animate a banner - Same graphic but words change ( either by fading off or rolling).

#2. Rotate a banner - Have a couple of banners switch out.

I found a large script and tried to change the file names to what I had but it did not work.

Thank you for your replies.