Looks like an OSCOMMERCE shop.
On first look.> DEFINITELY a more stock than not shopping cart.. whether or not it is oscommerce.. You DESPIRATELY need to move your BUY NOW buttons and make them actually match with the rest of your shop..
I couldnt even FIND then until i carefully scrolled your product info page.. Then once i found it i was disappointed. You need to move it up by the image and make it match better.. If this is an oscommerce shop, there is a better way to get a quantity box in there than HAVING to use that silly box w/ the button
DEFINITELY get a new navigation system.. the -> arrows make it look cheesey. Get a CSS dynamic flyout/dropdown menu.
Also remove the product counts on them 1.) because no one cares or needs to know 2.) because that adds another DB query to every page which slows your site dramatically
the refresh button in the shopping cart is not obviously enough.. ESPECIALLY if you have the older cart which REQUIRES a refresh after changing quantity.. this can possibly piss off customers if they THINK they changed their QTY but they didnt because they didnt see the refresh button..
Your login screen boxes are nnot aligns.. You have email on top of the email box (which looks good) but then you have password NEXT TO the box which makes it look off
You should also not REQUUIRE customers to create an account. Many studies show that customers will leave a shop if it is REQUIRED...
the overall looks a little lopsided because you have a bunch of boxes on the left column and only one on the right.. Move it around
Also, take that SSL seal OFF the main page and put it on the columns so it always shows and link it to your privacy or security page, and so that you can use that space for more important things. The main content section on any e-commerce page shoould always be "in-site advertisements" make pretty images that make people want to click!
Flesh out your returns policy.. "damaged in ANY WAY" is rather broad
the blue that your links turn when you click on them should be changed or not happen at all
WHY WHY WHY do you have a newsletter UNSUBSCRIBE?? it should be a happy SUBSCRIBE TO OUR NEWSLETTER!!!
dont feel like i am picking you apart.. these are just things i see in A LOT of carts like this.. its not bad, its just going to give you some things to work on