Thanks to everyone for helping me figure this out.:)
The Google Checkout Cart is very nifty, and in terms of design is exactly what I was looking for. However I don't think the checkout cart can be integrated with paypal annoyingly. I would have to add a seperate checkout sytem for paypal.
After a lot of confusion though I now know what I'm looking for, the question is where to find it...
I'm looking for a Free shopping cart system that can use both the google checkout and paypal system to pay.
Doesn't reload the page when an item is added to the cart. (This is what I enjoyed about the Google Checkout cart.)
Only requires you to insert code snippets into your pages where you need an "Add to Cart" button, or the shopping cart to display.
Preferably has an Inventory Control setting.
I've been hunting around and got close but no cigar yet, I will let you know if I find a winner, and if anyone already knows one already please post it...