I find it much easier and efficient to use the FUSION plug in PoserPro to bring the base figure animation into Max, which has a much better implementation of cloth dynamics. Now that they have a 64-bit plug it actually is a reasonable pipeline, in my opinion. Don't know if that's an option for you, but if I was going to do anything serious with cloth dynamics I'd look at the FUSION plug for Max, Maya or C4D.