heartlandhttp://www.fractalforums.com/index.php?action=gallery;sa=view;id=7455an example for volumetric positional lights.
as it mostly makes sense to position the lights out of sight i recommend to edit scenes like that in two files with a text editor - fract files are notated in cleartext (thanks for that, buddhi!). one file for the viewpoint and one for the lightpoints. via copy paste you can transfer the viewpoint to the lights file. for me this is much easier, as returning the camera to the viewpoint by gui clicking.
the rest you can explore by yourself, as the topic view contains the fract file.
have fun!
taurus