Hi designerstudio,
The "scrolling" view of the store window is set to appear at the top of your listings. It can, however, be inserted at the bottom of your listings if you insert the store window html in the bottom of the html description. The store window html can be found at Auctiva -> Store -> Store Window -> Store Window HTML.
You may also want to check out the "full" view of the store window as it is set to appear at the bottom of your listings. To preview this view, go to Auctiva -> Store -> Store Window -> Edit Store Window.
-Mike