That is already built into Zen Cart ...
You might want to look into the posts on the Product images for small, medium, large, additional and additional large images ...
There is a great deal of information in the WIKI and FAQs as well ...
Or you could peek at this thread to help get you started:
http://www.zen-cart.com/forum/showthread.php?t=44442&highlight=calicocat%2A
Linda McGrath
If you have to think ... you haven't been zenned ...
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