[CreativeAcrobate]

Does anybody know of a website or a program that will take 2 faces as an input and then output a 3rd face that is a composite of the 2 ?

I am trying to come up with an image of a local rogue cop. I have pictures of guys that he looks like.

I know there's websites & programs that do it. It's an image processing thing.

I know how to do it in Flash, but it could easily become a 4 or 8 hour project and I know there's websites that can do it faster. I've seen ads for them.

But when I do a web-search, I get nothing.