Adding a shopping cart on Synthasite

So how exactly do you add a shopping cart to your Synthasite website? The easiest way i found out was to was to simply copy and paste the code into the html widget.
Next question you are probably going to ask is how do i get that code? Well you can write the code yourself and copy and paste using this site: http://www.aspfaq.com/cart/ its insanely easy and I highly recommend you use it.

Here is my site: www.thrillawear.synthasite.com