delete… or my preferred way, comment it out
like this <? /* php get_sidebar(); */ ?>
in
loop-single.php
loop-page.php
(and perhaps others…)
then in style.css change 700px with 920px (i made a mistake in the previous post, it should be 920px… )
in
#content {
float:left;
width:700px;
margin:0;
margin-right:20px;
}