ack, i battle all day trying to get sharp objects to stay sharp in poser and here is someone trying to get them puffy :)

weld vertices works both in poser import and also with the uvmapper command. you can pick up a free version of uvmapper, IMO it is a better solution since when you want to sharpen up an object again you can also use it to split the vertices -- which you cant do in poser.

what are you trying to smooth? now im curious :)