hiya, firstly id like to say that you have a great add on for joomla so keep up the good work

i want to make all links that users post in comments to go to http://anonym.to/? then the link that they posted for example if someone posted in a comment this site as http://www.compojoom.com/index.php in a comment the link will automatically change to http://anonym.to/?http://www.compojoom.com/index.php

is this possible? if it is how and what files to i have to edit?
kind regards
dan