Ah now I see!! That looks much better!!! I can't help you with animating the lights. But I'm interested to see what you come up with!!
Regards,
Peter
PS. I found out that you can animate the visibility of the objects. Make the object (example->light) and turn it off by clicking on the M (next to the objectname) and turning off visible in editor and renderer. Go to the frame where you want it to be visible, turn on the visibilty and then create another key. It also works with lights. You can also animate the strenght of the light.