Hello,
just a suggestion if you need a cool module which displays products and sorts them by latest, random, featured,best selling,recent visited and custom selected products.
you find it here: http://www.developing-and-design.com/en/joomla/virtuemart-extensions/all-abour-products.html (http://www.developing-and-design.com/en/joomla/virtuemart-extensions/all-abour-products.html)
(http://www.developing-and-design.com/images/stories/all_about_products/screen1.png)
(http://www.developing-and-design.com/images/stories/all_about_products/screen2.png)