in custom.css

div#wrapper {
	background: #000 url(img/bg_content.gif) repeat-y 0 0;
	width: 740px;
	margin: 0 auto;
	padding: 0;
}

Whoo,

Thanks, but when I try changing 740 to 700, it ends up killing the sidebar and when I make 740 780 it makes it too wide - as in, this seems like just the width of the entire blog - not just the body. I seem to be missing some crucial data point.

Thanks for your continued help.

its not the width,

remove the line,
background: #000 url(img/bg_content.gif) repeat-y 0 0;

thats the line : img/bg_content.gif

--> http://www.autodogmatic.com/b2evo/blogs/skins/custom/img/bg_content.gif

youre going to need to edit the image .. its for a fixed width page.

Whoo - thanks a lot. Got it fixed no problem.