Not a stupid question at all Hal.... Vlad32768 has created a great importer/exporter for Blender.... You can get the Blender add on here... http://www.orbiter-forum.com/showthread.php?t=18661 and you need the latest version of Blender from GraphicAll.org. Once installed and activated in the add on panel, you can import a mesh directly from the Orbiter's mesh directory. Also, if you're familiar with Blender's new Cycles rendering engine, you can use Cycles, but you have to manually re-add each texture from the texture directory.... and an NVidia video card with CUDA and 2.0 (or higher) shader model support is recommended... also in that thread there's a site you can upload the blender file to and it will render it in cycles, then you download the output. The site renders most images in a few minutes, whereas if you're going to render with your CPU, good luck... the above image would have taken days to render. I have an NVidia GTX 570 with 480 CUDA cores, and it rendered 2500 passes in about 7 minutes 

