You'll probably want to convert the object to a mesh (if it isn't already) by selecting the object and choosing edit/jump in another modeler. Once there you can select all of the vertices and use the subdivide command. This will smooth the object, but will also increase your file size. Also, it doesn't work very well on objects that are very small in one of their dimensions (like a dinner plate or most similarly flat objects). Hope that helps, Jim Z. a.k.a. Julian Boolean