IE 5.5 div-width display problem

Hi there.

I'm working on develoiping the following site: http://tinyurl.com/3dqaj . . . CSS is here: http://tinyurl.com/39uef

. . .and I've run into a problem that I've encountered on MANY of my other sites. I'm stumped!

I'm assuming the issue has to do with the #wrapper and #white-wrapper (and maybe the #header?) divs.

The header is made of three images and all displays well in IE 6.0, Mozilla 1.6, Opera, etc.

But IE 5.5 somehow gets mixed up with the width and pushes the last image in the header [i]below the other images. What is the hack/code I need to insert into my css to resolve this issue? [/i]

Once I understand this problem I can go back and fix all my other sites, too.

THANKS!!!!