I'm not sure that this can be done by a non-programmer like me but I thought of asking anyway in case it's easier than I expected:

All my product_info pages have a 250x250 product picture on the left with the product title to the right of the picture, the price below the title and the "Add to cart" button below the price. What I want to achieve is have a "Click for shipping cost" link between the price and the "Add to cart" button, which will open a pop-up window for the visitor to enter the destination country and see the shipping charge for the particular product plus some explanatory text.

I think that I can manage to insert the link but, what I can not figure out is how to make it open the pop-up, most probably the already existing Zen Cart shipping estimator.

I have noticed that all German sites have this facility, probably because they are enforced by law to allow the customer to check the shipping expenses before entering an item in the cart. It gives the potential customer an idea of the cost and saves the trouble of entering items in the cart and be disappointed later when the charge is revealed.

Please note that my items are banded by weight and destination country, it is therefore impossible to insert a standard text like "Shipping cost is x for Europe and y for America" in the description.

If this can be done, could somebody accept the challenge and point me to the right direction, i.e. how to change the product_info.php file and call the pop-up.

Many thanks in advance and best wishes.