nj,

It looks to me as if you are asking us to write your paper for you but I'm sure you don't really need to be spoon-fed. The answers to all your questions are readily available in books and on the internet. Google is your friend and even using the search facility on this website would reveal a wealth of information.

You will gain far more respect if you do some research yourself (that's the main point of having to write a paper) then come back and ask specific questions about anything requiring further clarification.

Good luck.

Rob Hoole