You might want to try this program:
http://kandid.sourceforge.net
It's free, it's a web applet (although it's 4.25MB), and it creates interesting pictures based on evolved groups, ensuring that each picture is unique. I don't know if it will help in your game, but I thought I'd give a heads up.
In other news, FMTA is slated for release possibly saturday or sunday. :D