[Leica] M3 help

[KCassidy at asc.upenn.edu (Kyle Cassidy)]

My leica d100 started shocking me yesterday. Literally. ZAP!ZAP! So I sent
it into the shop and borrowed a leica m3 rander-finger thingie off of the
rental shelf. I scratched my head for five minutes and couldn't figure out
how to get the chip in, when I realized it took film. Now I can't figure out
how to get the back open. It drops in somewhere, right? The film, that is.
I'm pulling up on the rewind crank but it seems stuck. There aren't any
other buttons on the top that could possibly open up the door. I even hung
it from an eye hook and used my body weight to yank on it, this is how you
make the door on the back of the camera pop open isn't it? I can SEE a crack
in the back where there's some sort of door that opens up, this must be
where the film goes. Putting a thin screwdriver in there I'm able to get a
TINY bit of play. I tapped it a few times with a rubber mallet and succeeded
in getting maybe 4 or 5 mm of the screwdriver into the back of the camera,
and if I pry VERY HARD it moves up a little, tiny bit. At this rate it's
going to take me two days to get this film in here. What's with this camera?

UPDATE: I managed to pop the door on the back of the camera open, it flaps
around like a square door, hinged at the TOP and won't close properly now,
but in any event, THERE'S NO ROOM FOR THE FILM IN THERE. It's just a flat
square in front of the shutter curtian, I can tell it's the shutter curtian,
because I poked my finger through it.

Q: ARE YOU SUPPOSED TO LOAD FILM INTO THIS CAMERA ONE FRAME AT A TIME? DOES
THIS NEED TO BE DONE IN TOTAL DARKNESS?

Q2: WHERE DO THE BATTERIES GO?

Thanks,

Kyle