I've solved part of my own problem. The code I was using relied upon thickbox, I'm using lightbox2. I installed thickbox just to see if it would work, nothing changed at all. So I found some code above to use lightbox, and it's working in that if you click the link to the image it will display with lightbox, but the thumbnail isn't showing for the product detail... Is there something with Imagecache I need to change? This was all working before I created my node-product.tpl.php.

Thanks