banner by product category

[lipes]

Hi I got another question:
To apply a joomla custom module (html) and apply it in the lateral side bar (left/right) of the VM Product Category(ies)  area its possible to have something like:

Banner of "Product Machines" (linked to joomla Product Machines articles "Help Choose / Environment Choose") in that specific VM Product Category (Product Machines), and dont display in all VM Products Categories; but only related with that ...

could be related to http://forum.virtuemart.net/index.php?topic=100696.0 "$this-> VS $product->"
but how to filtering the module to apply by some product category(ies) ? maybe we need to do a banner by the product category id ? right ?