Lights Problem - I don't see them

Read a number of other posts on this, but the only response I found was "uh, check your settings," which doesn't help a ton. :)

I'm using After Effects after having some experience in Combustion. When I add a light, I don't see it in the composition view. My lights are switched to Cast Shadows, and my layers switched to Accept Lights/Cast shadows/accept shadows.

I can turn off all lights entirely, and still see everything in the scene. What am I missing here? I'm sure it's a simple stupid setting somewhere, but I haven't found any posts identifying it. Watched several tutorials in hopes to seeing them set up whatever it is I'm not doing, but no luck. Anyone?

Thanks in advance to whatever kind person tackles this.