infraction.php plugin

[neverstop]

Hi,

I am looking to add a plugin in infraction.php. What I want to do is when an infraction is given to alter the 'credits' column (it is a custom column) in the user table of the user that is receiving the infraction. For example: user foo receives an infraction, and when he receives this infraction the plugin with do something like:

PHP Code:

SET credits = credits-X 


Now I have scoured the infraction.php file and I cannot find a where I could add this. I am not a programmer so please bear with me. Is there an appropriate hook where this would work?

Thanks in advance,
Ian

EDIT: tried to post infraction.php in [php] tags but it made my msg too long to post.