This is just a module to display cart contents, nothing else.
The standard VM minicart shows the number of products and the total price.
Mine displays each item individually and then has options to display attributes, quantity, price etc of each item in the cart.
Does not change or alter the way Virtuemart works at all.
In fact, if you check the items installation
here It tells you waht it does and you can see how it works by adding something to the cart.
Forum 
