I have to apologize. I wrote "RDS" format when I actually meant "3DS." Since I cut my teeth on Ray Dream Studio some years ago, I guess I have it on the brain. Sorry. An example of the OBJ/3DS thing is the bathtub created by Anthony Hernandez (aka Nosfiratu), which is available in FreeStuff. The Zip file includes: bathtub.obj bathtub.3ds Based on the advice given here, I plan to use Twoface4.exe with the OBJ file to get the bathtub into Poser with visible exterior surfaces. Thanks again for all of the help. - Richard