Do you mean simulated GI? Check this link: http://www.bryceanworlds.com/pages/simulated_radiosity.html It's been updated so everyone who hasn't checked it out after 3rd of april should have a look to see if there's some new stuff in there.

(_/)
(='.'=)
(")(")This is Bunny. Copy and paste bunny into your signature to help him gain world domination.