I think you ought to have a look at UVmapper Classic. Also, consider Wings 3D as a tool. I've found Wings 3D to be quite useful for selecting polygons and assigning them to materials--for a start, things are easier to see than in Poser. One of the hassles with using the in-Poser grouping tool is that you have to assign the polygons to a new group, assign a material to that group, and remember to delete that group. Apart from the obvious side of sorting out UV maps, UVmapper is also handy for combining materials. Sometimes, it's easir to UVmap an object with parts as different materials, and then combine them to a single material/texturemap. I've done that with a set of pants, flattening out the cloth and arranging the segments in a way resembling a tailor's cutting pattern. And the final single piece of cloth is an obvious single material, with stripes affected by seams just like the real thing.