Firefox vs IE

I had a very simple theme developed but am having a hard time getting it to look right in IE 7 and IE 6. It looks just like I would expect in Firefox.

It’s the background color in the sidebar and at the bottom of the page that seems to be wrong.

I have been testing it at http://www.timshank.org/ please forgive the ugly colors, I was just testing it.

Thank You,
Tim