CSS problem in IE

Hi

I am a noob using Dreamweaver CS3 to put together a simple site for my wife. All was well until today. The site looks fine in FF and Chrome, but everything shifts to the left in IE.

I can’t figure it and need help. What have I done wrong ?

the site is vteexpert.org.

I would appreciate any help and thanks in advance.

Obey

Make a stylesheet, call it ie6.css and link it on the page.

In the stylesheet add the elements that move along with their new position.