this is one of my starting renders using new render engine called twillight , that works directly inside sketchup, you can have a demo version to try, or buy a copy, here:http://twilightrender.com/ (download section)
and maybe interested to see more examples and renders:
http://twilightrender.com/phpBB3/viewforum.php?f=14
http://hirad-co.com/html/
http://aprs.ir/fa/
