vortac12

First, I want to say that this forum has been the BEST. I have found a lot of information in here and the library of content on here is amazing. I do have one question though. I have seen in many posts if people have checked 3D warehouse. I think I was able to find the website but I am not sure how to use it since the file extensions are not .CALIB or .CALIBZ. How do I get the models to work in Home Designer Architectural?