Yes, but you probably won't want to in the long run.
MiniVend is designed to build pages based on templates, from a database. If all you want is a shopping cart, you probably should use a simpler program.
It is not difficult to convert existing static pages to MiniVend, but maintaining them can be a nightmare.
That being said, all you usually have to do to place an order link on a page is:
<A HREF="/cgi-bin/simple/order?mv_order_item=SKU_OF_ITEM">Order!</A>
Replace /cgi-bin/simple with the path to your MiniVend link.