I'm making some clothing for poser and when I run a coth room simulation, I'm getting poke throughs of the feet and backside, even though I don't start out with them and the model stays in the zero pose the entire time. I'm using the basic settings that I normally use so I'm thinking it's the clothing, maybe I don't have enough poloys. Would that cause the problem?

Are you sure you don't have reversed normals there?  That would cause the collision to fail.  I doubt that it's the poly count, but who knows?

John

Perhaps you should increase the number of polygons in your clothing model.

A couple of things come to mind, you might try setting under additional cloth collision options
object vertex against against cloth polygon and polygon against polygon. If you have a coarse mesh and the sim is just seeing vertex against vertex you can get poke through. Also I find sometimes if I have been trying several sims I need to delete all the frames (change frame setting to 1 of 1) then go back to 1 of 30 or however frames your running and reset your pose and hit the clear simulation button. If you have been running several trial sims just starting a new one over doesnt seem to clear out all the info from the previous sim. One other thing make sure there is no contact between the cloth and the object at frame 1.

check also that you dont have ingnore hands/head/feet option selected.

I had similar problems few times. What I did wrong:

• in scenes where were more then 1 figure I set collide against wrong figure (often happend when you have "Figure1 and Figure2"

• default/dynamic group was not corerrect. Add all verts to default group.

• Poser 5 did not react for checking/unchecking "ignore hands/feet" collision. P5 always ignored them.

Maybe you did one of above misstakes?