Richard,

Since Anton's going to be using the Poser Firefly render engine for the conversion, you just save the converted texture as you would any other image file in Firefly. Or you can probably save it as a MAT file in the Poser library as well. 

But we'll have to wait and see if it works out. But Anton is pretty good with making his ideas turn into reality, so it should be fairly easy :)

-- Jeff