I don't know how to express how confused I am with the lighting tutorial I'm trying to follow. First, I typed "beginning lighting, iclone 7," into youtube but keep getting this iclone 6 tutorial. So OK, I figure maybe that's the newest one they have and what they say still holds for version 7.  But the narrator starts with saying he's going to delete the lights from an existing project, but doesn't say HOW. Then I close the project I was working on and begin a whole new one, which he says should contain only two lights. But when I deactivate both, there's still light on the scene. Quite a bit of it, actually. I'm just baffled. Could somebody please offer an explanation for where that light might be coming from? 

(this is the turorial I'm referring to)