Nextgen Gallery Plugin Integration with Paypal Shopping Cart

I need a Nextgen Photo Gallery Plugin, set up and integrated with a paypal shopping cart. Can somebody help?

I have followed the Instructions of https://www.wordpress-ecommerce.com/wordpress-shop-using-nextgen-gallery-and-wp-shopping-cart-7 to Integrate the Nextgen Plugin with paypal shopping cart.

I tried and came up with this https://boxingbit.com/397/.

Issues I am Facing in my implementation;

1. “Add to Cart” does not look like the button described in the Instructions Link Above.
2. On Click of “Add to Cart” button I don’t get to see the Shopping Cart Contents as shown in the Instructions Link Screenshot.

Looking forward for help.

Thank you.