The most important thing is to split all n-gons into quads or triangles. Poser cannot
handle n-gons well at all. If you don't know, a n-gon is a polygon (face) with more than
4 vertices (points). I have less of a problem with Poser smoothing id I set the crease
angle to 39. It seems to get rid of most smoothing issues. Hope that helps.

Eric