I don't know much about editing cameras myself but others have discovered ways of doing it. You might want to run a search though as it's been discussed a few times before here in the NBA Live 07 section as well as the NBA Live 08 section.
I found the perfect cam Pdub, it was included in the SUM v.2 update i think, now, the cam is sSWEEEEEEEEEEEEETTT! hahahahaha.. thanks master of patching and modding...