Right:-). There are tutorials at UVmapper's site. For a building, it seems easy to create a template as a box. But Sharen knows UVmapper better. I'm just beginning with it for simple objects. It's great to have a template to paint the texture on it:-). You cannot map directly in Vue, because these DXF files comes in only one piece. That's why you need UVmapper. About DXF->OBJ converter, I only know a free one for Windows (3dwin). Guitta