Hi, is it possible to make a site like this using zen cart?

http://www.phweb.biz/proofs/jewelrybyvictoria/template

As you can see, my borders on the left and right have shadings and they are images background. Is it possible to add some <div> to it? Another question is that how do I align the site to the middle, I just started studying the cart software.. here is the link:

http://www.wordfortheworldlp.org/zencart

Thank you and hope to get replies from you guys.