I\'ve got a site: http://www.sucramma.dk When I\'m in FF, Chrome, or Safari, the site is displayed as it should, but in IE the site is left aligned, and is running is quirks

It's a Byte Order Mark, , which is invisible to most text editors. Try using VIM and killing it or somehow find a different text editor and kill everything before
You can simply copy and everything below it into a new file and save over it, meaning you wont be copying the BOM coming before it to resolve this issue; I've ran into it many times.