Major problem with [productspage] & issue with recent products widget

I have recently switched from WooCommerce to WP-e-commerce and i’ve been struggling to get the site back to it’s former glory.

My first issue is with my shop or [productspage]. As soon as i add a [productspage], all my links/menubar links turn into the productspage. ALl other information dissapears! Also; the productspage has the categorys on the top of the page as links (which i dont need). I have no idea how to resolve this!

Second issue is with the widget in my footer (Recent products). It is showing the products horizontically and the pictures are not showing either. I used to use this code to make it vertical:
ul.cart_list li, ul.product_list_widget li{ float: left; margin-right: 50px; }
But it doesn’t work now with WP-e-commerce.

I used this to make the topic centered aswell, but it doesn’t work either:
#footer .widget_best_sellers h3 { text-align: center; font-size: 30px; }