Batch replace image and render...

Hi,

Made an animation for a flag, just imported the flag into AE and put a couple of warps on it so it seems to wave in the wind.

I need to do this for every national flag in the world (200+), so I'm looking for a way to automate this. Any suggestions?

Basically I need the program to load all the images (flags) in a folder, replace the image wich is already there and then render the comp before the nest image is loaded.

Any ideas?

R.

PS. I'm still working on CS4.