I understand how the ZC additonal images works ie productone_1 productone_2 etc but that uses the images names to reference the images to the products, the way my site is we have additional images added via IH4 which have a totally different and unrelated name for example, we might have a ford focus for sale with the photo focus_1.jpg but also have a photo of a technical spec (generic to all model cars) also added with the name techspec.jpg, so in normal terms ZC wouldn't make the connection... but IH4 does.

I was assuming that IH4 had a table in the DB somewhere that had additonal images defined, ie ID1, techspc.jpg, techford1.jpg etc am i assuming wrong and it is not possible for me to find the defining link between the product id and the additonal image file names?