I'm starting a new topic because I don't want to monopolize MightyOne's or other members threads.
It's a bad time for the board, nobody is posting and few are reading. I really hope that this thread could be a place for students like me, who want to learn and post.
Here I'll make some research and test so I'll be able to ask better question to MO (

(I'm sorry for my English, language is a little barrier but charts can talk without saying a word)