I've been able to work out a solution by adding a ball around the flame, adjusting the transparency settings (both max and min), and applying a spot light. Check out the following tutorials: http://www.posers.net/volume.htm http://www.posers.net/streak.htm You can see an example of what I've done with these at the following page (warning: erotic nudity) http://www.renderotica.com/portal/modules.php?op=modload&name=Gallery&file=index&do=getcollected&submitter=Pablo