INove theme css editing after removing default widgets

Hello,

I have installed the INove theme, and edited the sidebar.php file to disable all default widgets (as per this page). However, now the east and west sidebars are still half the width of the entire sidebar, and there are still horizontal lines to separate the various sidebars that I would like removed. To be honest, I just want one sidebar. Can anyone give me the code to do this, maybe for the css or whatever? Thanks.

Adam