I use Sierra Home Architect 4.0. Don't know if it is still available. I was fairly inexpensive. $20.00 or so. It makes great environments but cann't not locate the plug-in to inport BVH files from Poser. Don't remember the name of the plug-in. I looked at a program called Punch, which is also an architectual program but it was not as good as the one from Sierra.