Sorry this went unanswered.. Mimic Files are different than Visemap, and not every figure has a Visemap.

Noel has a post at Shader's Cafe, where they supply the email address to contact to purchase Talk Designer Expansion Kit that includes support for many figures...

You can make your own as well (Look at one in Poser and you can see how they are made) I make my own... you add morphs, you can even improve the default figures' Visemap!

ratscloset
aka John