no worries, i added a bit of code to display above my product image and added a new button to my template tpl_product_info_display.php and also updated my button definitions in button_names.php to include the new button.

the code is below incase anyone else is looking for it.

HTML Code:
<!--bof stock image-->
<div id="stock_image">
<?php 
if ($products_quantity > 0){
		echo zen_image_button(BUTTON_IMAGE_INSTOCK_SMALL, BUTTON_IMAGE_INSTOCK_ALT);
}
else
{	echo zen_image_button(BUTTON_IMAGE_SOLD_OUT_SMALL, BUTTON_IMAGE_SOLD_OUT_ALT);
} ?> 
</div>
<!--eof stock image-->