Is the banner an image or Flash?

Well, I don't know diddly squat about flash lol, so I was thinking of just using an image. However flash would be quite cool

nothing?

I would suggest that you just display the image. That's what most advertising banners are.

Some of them are motion picture images (which I don't like, because they steal control, preventing me from navigating quickly until they stop moving). The motion is contained inside the .gif or .flv file itself. If the file contains motion, it will move when displayed without further coding from you.