So first of all, I'm a designer first and a light coder second. This is my first-ever attempt and setting up an e-commerce site from scratch, and I've been on a real learning curve.

This is a one item shopping cart -- the only thing that can change is the number of items ordered.

So, I've set up the site structure and design -- CSS and HTML -- and proofed it in all major browsers (IE, Firefox, Safari, Opera). Then I went...