Hi. We are developing a new website for a client and I need to find a shopping cart system that I can integrate into the body of a page. Every solution I find is for an entire store design. Any suggestions would be greatly appreciated.

Mike

do a google search for...

Roman Cart
Mals eCommerce
Fat Free Cart

"actual shopping carts are much better, if you want more than a cart look into Joomla and Virtue Mart"

Here's some of good shopping cart system you could get on the net..
www.scsystem.com/
www.zen-cart.com/
www.x-cart.com/
www.smartcart.com/
www.cart32.com/

Try google checkout or paypal shopping cart.

What are the exact needs of the client? What cart you choose will rely heavily on what exactly the client needs.

I think google checkout will be better option for you .....just check the X-cart also

Have you considered Google checkout? But if you want more than just a cart, visit Joomla.