WordPress.org

Where do I find DropShop and Grid View

From the BlogShop of course http://www.instinct.co.nz/e-commerce/shop/

How do I customize WP e-Commerce

First of all you should check out the presentation settings which are in the Shop Options page.

Advanced users can edit the CSS (and do just about anything). Not so advanced users can contact Instinct and either purchase professional support.