I moved some geraniums to a bigger pot; if these aren't in the window or under a flourescent light, do other lights work? For example, my desk, is there a lightbulb that would be close to what kind of light it needs that I could use in there and put my potted geraniums under it on my desk? Radian Natural Light lightbulb? That's not strong enough is it?

actually, that might be close. i'd try it, you can tell if it isn't getting enough light, it will go pale and droopy on you.