adding conent to my static pages

I have static pages structured like this

<?php
/*
Template Name: Contact
*/
?>
<?php get_header(); ?>

<div id=”contact”>
<div class=”leftColumn”>

<?php the_content(‘Read the rest of this entry »’); ?>
</div>

<div class=”rightColumn”></div>

</div>

<?php get_footer(); ?>

What I need to do is use the html box in manage > pages to edit the content in the left column.

Can someone explain how I can achieve this?

AK