Add back button to my EZ pages?

Hi,
Could anyone tell me how to add the back button to the bottom of my EZ pages so they match the Shipping & Returns, Privacy, Conditions of Use etc. pages?

I have looked through the php files and found this code

<div class="buttonRow back"><?php echo zen_back_link() . zen_image_button(BUTTON_IMAGE_BACK, BUTTON_BACK_ALT) . '</a>'; ?></div>

but when I paste this onto my EZ page it doesn't do anything. I assume I need to tell the page where to get the button information from but I'm not sure how to do this or which page is required.

Please can someone point me in the right direction?

Thanks

That's PHP code, and belongs in template files. So add it to your custom ez-page template file: tpl_page_default.php

Thanks DrByte, That worked a treat I added the tpl_page_default to my overrides.

Thanks