I finally got a working website, upgrading en existing one from a previous VM version.
The website is based on FLEXICONTENT component (used to generate and maintain all the webpages), and it integrates VirtueMart 2 for the requested e-commerce functionality.
A lot of work has been necessary to integrate both the two products, but the final work it's a relatively easy-to-maintain website.
I would like to share with you the result, waiting for your comments/suggestions: http://www.mmcedizioni.it
The VM2 integration is evident starting from here: http://www.mmcedizioni.it/it/catalogo-libri/catalogo-libri-per-generi.html
good supers