Customize e-commerce shopping cart view.

I wanted to implement another view of shipping cart.
Usually, it can be done, by theme’ing wpsc-cart_widget.php in your theme directory.

But for some reasons, this didn’t work for me.

I specified Shopping cart type as Widget in Settings -> Store -> Presentation.
added the following code to my theme template:

and the following code to functions.php:

Then customize wpsc-cart_widget.php file in your them directory