[SOLVED] How to center align content
 

I want to center align all the content on my site (theaveragejoeblog.com), as you can see there is a large gap between the text/images and the right sidebar, how do I make the center page use all the space between left sidebar to right sidebar.

Also anyone know how I can change the color of the horizontal lines that are separating the posts?
Thanks

why not shut off the right-inner sidebar? (ato->Style & Edit Sidebars)

Of course, how did I not see that, thanks.