I need to insert some code when the comment is adding. There is a report, that reports admin by letter of new comment.
It is not enough for me.
Except reporting admin by email I need to sent his a special letter. I need to send it by myself, not by the system, and also I need write entered data to other table in database.

The problem is - I can not find script, that adding comment to insert my code. I tryed to edit all the files with name 'comments.php', but no one of them executed my code.