Superstar Mode - Star Half Back

Questions! Please answer. What are COD skills? I'm not sure how to become a lone wolf... Where do I find press conferences? Is it possible to half a positive agent when you are a lone wolf? And how do you permenantly improve your attributes such as speed? Are they just improved slightly after each season? Thanks to everyone who answers... BECAUSE YOU WILL ANSWER!!! Please.

P.s. I have the gamecube version of Madden 07 but anyone on any sytem can answer. Thanks again!