You may also check this plugin http://wordpress.org/extend/plugins/multi-column-taxonomy-list/ as might accomplish what you are trying to do.
You may also check this plugin http://wordpress.org/extend/plugins/multi-column-taxonomy-list/ as might accomplish what you are trying to do.
Try increasing the width parameter on the code below from 590 to 940 through the style.css line 190.
.content_left {
float: left;
margin: 0;
padding: 0 10px 0 0;
width:...