Which part broke?
That's part of the process. After that, you will probably need to disassemble the optical drive.
No, that sounds like a load of BS. None of those ICs look to have any kind of graphics processing ability, but I'm not iFixit :P
Ok, I know this comment is pretty old, but it looks like there's plenty of spaces to put a 2.5" drive but I doubt you could fit a 3.5" one.