Need shopping cart checkout pages redone to be simpler & more attractive

An online pharmacy website needs its shopping pages redone (especially the ones related to the checkout process). This project is ONLY for seasoned designers who have designed shopping cart/check out pages in the past and understand that you want to move the clients through as efficiently as possible. Please provide samples of previous work. Go to [login to view URL] and attempt to purchase any medication. Go through the signup form and then the credit card form (you can enter any fake info (use Mastercard number 5431111111111111). You will see that the pages are "awkward". The signup form is out of place, the credit card details are asked for at the bottom of the page when they should be at the top, there are no "buttons" for checkout, next, buy etc, there is way too much empty space etc. etc. We need a designer to redo the design for these pages so it is congruent and flows much better like on [[login to view URL]][1] (this is just an example. Try and come up with original ideas to make our process even better). You get the user to buy the product quickly in a smooth flow without letting him think too much. If you can deliver the design in zencart compaible HTML pages all the better, if not, we can take PSD files and have our people do them in zencart.