Customizing displayed images

[bhensarl]

Hi,
I have an apparel store and I'd like to be able to show a shadowbox type image gallery below the main product image so customers can get a better idea of what the shirt looks like. I've attached two images: one that shows the site as it currently is(http://2 6 0 0 s t r a n g e.com/index.php?main_page=product_info&cPath=1&products_id=8) and one of what I'd like it to look like. Anybody have any ideas? I'm currently running Zencart 1.3.8a (I'll be upgrading soon). Thanks in advance!
Brian