Dont get so worked up that you cant type proper english. The
caps makes you more of a retard.
Calling the cops will not work because they dont care much.
unless they receive other reports from other people with the
similar case.
Firstly, how do you know he/she is a 9 year old? Are you making
that up? dont give false information or we wont understand the
situation.
Secondly, How did you see the UNKNOWN person in facebook? Who
was it? he/she posted something and you noticed it? Because if the
unknown person added you as friend, you have the right to accept or
decline.
Just be careful, and dont log in to MSN or hotmail for
awhile.
And i dont get the facebook thing. He/she hacks your MSN but how
would he/she knows you have a facebook account? Maybe its one of
your friends who's behind all this.