Poser usually has no problem with ngons. Think a cap on a cylinder. It's how it's modeled that Poser doesn't like. It likes sharp edges to have a close edge loop on either side of that edge to create the sharp edge. If you don't want to do that, you can split the edges you need to stay sharp and Poser usually recognizes Wings sharp edges. I wouldn't want to have any ngons in a piece of clothing though ;).

Laurie