IE CSS Styles

I'm having some problems with my site when view in Internet Explorer. My website (http://www.cincyliberians.com/) has no css styles apply when view in IE browser but works fine in Firefox, Netscape,etc. What I don't understand is why some of the pages have css styles in IE but some do not, especially the front/home page. I'm using the picture reloaded theme and when I switch to the default theme (Garland) or any other theme, it still does not have css styles. Please help me!!. I installed the Unlimited_CSS module and thought it would help solve the problem but it does not.