Can someone tell me how to open the overhead light compartment in my camry in order to replace the light bulb?:)

If there are no visible screws, then it probably just "pops off". Look around it's perimiter for a groove that you can use a small screwdriver or your thumnail on. Be gentle with it, though, to avoid breaking or cracking it.

If no one else posts the how-to, and you still can't figure it out, give a local dealer a call; the parts manager will be able to confirm how to remove it.