Displaying new fields in their own box

This is a great mod!  So far I found it easy to modify using the supplied directions and have added several new columns to the places_places table.  I even added a select box to the add place form with values based on a new table that I created.  Thanks for the excellent documentation.

I am stuck on one thing though.  I created a new column in places_places to store driving directions to the place.  I want to display these in the view, just as the description is displayed.  I created a function similar to this one:

    function getBlockCode_Description()
    {           
        return $this->aPlace['pl_desc'] ? array($this->aPlace['pl_desc']) : '';
    }   

But I don't know where / how this function is called.  How can I display a custom field in it's own box?

thanks for any help!