[Jolten]

Well it depends upon your point system. you really didn't give any information about that. Basically you just need to add a query
Find:

PHP Code:

// insert record into password history
        $DB_site->query("INSERT INTO " . TABLE_PREFIX . "passwordhistory (userid, password, passworddate) VALUES ($userid, '" . addslashes($hashedpassword) . "', NOW())"); 


Below add:

PHP Code:

$DB_site->query("INSERT INTO". TABLE+PREFIX ." [table name] (points) 
        VALUES (''50'); 


Or something similar. Your site will definitely be different though.