Attached Link: http://www.fallencity.net/lore/index.php

You can't do it that way. MATs are a clever hack that was discovered a few years back - Poser doesn't technically support them. Poses, by default, save only position information (and morph information if you tell it to.) Someone discovered that you can also create a file with material information, save it using the .pz2 extension, and Poser will load the material information. (It's too dumb to know better.) The easy way to do this is to save the white Vicki as a character and get a MAT creation utility to strip everything out and leave you with just the MAT. The harder way to do it is to save the white Vicki as a character, exit Poser, open up the .cr2 file (created when you made the white Vicki character) and strip everything out by hand except what you need. I have some tutorials on MAT files, if you're interested.