Unfortunately, this module does not work for me: no configuration possible, no documentation. It is as though phantom module was no article about the use of this module appears on the publisher's website. The worst is probably the silence of "support": no response on the forum, no response to my email. This is the first time I have such a bad experience with a commercial stuff. An editor absolutely avoid unless you fancy to 5 euros in the trash go!
Please check the documentation already available here http://www.thakkertech.com/forum/6-joomla-extensions-faq/1108-deal-of-the-day-virtuemart.html