I figured out how to delete it altogether. It turns out that this is just an image called wrapperbg.gif and it is set to repeat-y.
The code that refers to it is in the header.php file:
#wrapper2{
background: #fff url("<?php bloginfo('template_directory'); ?>/images/wrapperbg.gif") top right repeat-y;
}
and down lower also:
<body>
<div id="wrapper">
<div id="wrapper2">
By deleting the div wrapper 2, or the entire code above, it will disappear completely. Is there anyway to keep it on the homepage where the sidebar is still present?
Thanx.