Drupal/Gallery integration theming issue IE 6 adding right hand margin to the page

Hi wondering if anyone can help?

Been having problems with Internet Explorer 6 adding a right hand margin to the container div on
my drupal integrated gallery. I'm really not sure if this is a drupal template issue or a gallery
one?

The affected pages are the drupal home page and all of the gallery pages.
http://lumina.mbugmusic.net/
http://lumina.mbugmusic.net/gallery

Anyone have any idea what is causing this and any suggestions on how to fix it?

Thanks very much
Rene