[Kitman]

the product.tpl file is just within the customer/main/product.tpl folder etc.

And dont worry about Borking it up. Im pretty much a novice at this all anyway and Ive managed to get it working. once you locate the product.tpl when youre looking through your templates just copy out the original code and then paste in the new code? should it not work for you just copy the old back in no harm done.

Dont worry you'll slowly get used to how it all works.