The cube must have UV coordinates applied to take the texture. I don't think dxf supports UV mapping, so the UV coordinates from trueSpace will get lost in the process. You need to use UVmapper (www.uvmapper.com) or some somilar application to apply UV coordinates to the cube. Export the cube from Poser in obj format and run it through UVmapper. Or you can export it with a format that supports UV mapping, like obj. There is a free plug in for trueSpace that makes obj export possible. Check on Caligaris site.