I just pulled apart my battery (so I can mod it to fit in a smaller place (shorter and taller) You can easily pop it open. Set it so the bottom (the part with the part number/label) is up. stick a small knife in the corner on the inboard side (the end closest to the connector) there is room there, just pry up, and work your way around.
Don't dig too deeply, just under the edge. the whole piece will pop off eventually intact...like a lid.
To get the batteries out, carefully pry them up...they are glued to the bottom of the case using sticky tape.
Office depot sells a laptop screen cleaner.
But the screen on the fuji 1200 is not the laptop screen, it is simply a plastic cover about 1/4 or 1/8 inch thick, separate from the lcd. You can try to find some plastic polisher to fix the scratches...that is what I need to do.