Ah, ok, I could use an older GD then to create the GIFs. But the older GD doesn't support animation natively (without ImageMagik) does it?
Assuming the older GD does not support animation, then I guess I would use imagemagik to cobble together separate GIF's into a single animated GIF, then read it back from disk, then spit it out?
How fast is this realistically? What I have in mind will be getting mega hits and each hit to the banner would have to be dynamically created. I am worried about the overhead of invoking ImageMagik all the time.
Any other GD libraries available for GIF animation, even fee based?