okay, looks like this task was not as easy as i thought.
i don't want to ruin my N9, because of its my main phone.
thanks for a little hint, but still need a clear and persistent tutorial to make this mod right.

i will leave it here, probably somebody want to try the qwazix's way but in NOKIA SANS, precisely like what i'm thinking in first post

Note: sorry, it could be a big hint for anybody who understand how it's going to be