Attached Link: http://www.firelog-enhancer-grate.com/enjoyinghefire.htm

Do logs with a blacked and red hot spots like lava tracks in the wood. give the illusion of hot logs on the fire. The link gives ya a good example of what the logs should sort of look like...fire can just be flame with red/yellow flame with transperancy set. shouldn't be any harder than modeling the fireplace :)