"I just picked up the M3 skeleton from Daz and now I want that one supported too!" The Millennium Skeletons can already take conforming clothing from M3 & V3. The downside is that they can wear the clothes, but it looks as if the original figures are still in them, so they're defying gravity and have musculature and it doesn't look right. The solution would be to save the clothing as an Obj, import it, and use the cloth room to drape the clothing over the skeleton. A lot, but not all clothing (especially clothing that have solid interiors) cannot be used as dynamic cloth because there cannot be any intersections between the cloth and the figure before the calculation starts.

My visual indexes of Poser content are at http://www.sharecg.com/pf/rgagnon