How can I edit animation heads?

[el_dios_de_todo]

I have created my little version of the earth with starting points for the major countries and civilizations featured in civ 3. The problem now is that when I go to play the scenario, I get an error when I pick one of my newly created civilizations, like the Australians. The game then quits. I think this might be caused by the fact that I didn't put anything in the head animations box. I can play the Flics in quick time viewer, but can't edit them. Could someone tell me what software would be required to edit these files. I would really like to create my own leader heads.

[Level]

Animation Shop, comes with Paint Shop Pro.
Image Ready, comes with Photoshop.

[GhengisFarbâ„¢]

I use JASC Animation Shop 3 but you need to make sure when you save the finished .flc that you've set all of the frame's 'frame properties' display time setting to '1', otherwise Civ3 will play the .flc with a strobe light effect and will eventually crash.