Non-WP CSS w/ IE Help

I’m wondering if any of you CSS gods can sort this thing out — I’ve started using Gallery for my photos on my site, but I have a major formatting issue in IE.
I wrapped the Gallery header and footer with the same divs I’ve wrapped the rest of my site, and it looks great/normal in Firefox, etc. It looks absolutely HORRENDOUS in IE 6 (shifts the page left and leaves this unsightly vertical white bar to the right).
I posted something at Gallery’s forums and they’re not being helpful, so I thought I’d try my luck here.
Here’s the photos section (You can see what it’s supposed to look like by going elsewhere on the site or viewing it in anything but IE)
Here’s the css
Here’s the header file
Here’s the footer file
Any help at all would be greatly appreciated I’ve been playing with it for two days now.