You can alsot give a try at Amapi. The interface is a little strange but it's cheap and incredibly powerful. I think you can get the version 4.3 for free with some magazine (I don't know the titles of the American one, I'm French, but I know that it was also offered in England and America, maybe two or three monthes ago, it should be possible to order an old issue). The version 6 is just out (you can get a trial copy here : http://www.tgs.com/media.htm) to have give it a try. It can import and export obj file now and I think it's really low priced (I just have the free 4.3) :) J-L