Does anyone know how to modify this .swf file?

Virtual Ragdoll

This is a pretty old ‘flash game’, I think it was called Tenka Girl before. But I’d really like to modify it for fun, by replacing the model’s face and body parts with my own.

I’m not a Flash guy, so I don’t know if there’s a way to do this to an existing .swf file, but all I want to do is replace a few existing images.

I think this would be a huge hit if someone made a webapp where people could upload their faces and parse out a unique file. Thanks in advance.