Care to share what you have found so far? Any ideas on how easy is it going to be to turn existing resources on and off at different times? Can we make windows they chose not to light, light?

I'm assuming that you're talking about the exterior windows that you see from outside the Bison Hotel in Primm?

I don't know how easy it will be, but modders have been doing similar all the way back to the days of Oblivion. You could look at the DC lighting project for FO3 as well, the exterior lights that they added across the wastes would turn on/off at dusk/dawn.