That's a nice website. Wordpress. Custom theme. I like the graphics in the header fading into the background.
First time poster....if you can produce that level of work then you should be helping your fellow web designers...
You have a lot of dead space in the left sidebar....you could fill that up with some content....so that the amount of content in the sidebar and content area is the same.
Maybe put the little slide show list of products vertically down the sidebar. I'd put it after the paypal logo you have there under the shopping cart. The blog and useful links could get pushed.
Just an idea, looks good.
Even cooler would be a dynamic javascript sidebar which drifted down as you scroll the content so the user always sees the important sidebar information and has easy access to it.