IE and WordPress

Well, add these lines to functions.php of your theme.

add_action('wp_head','ie_only');
function ie_only(){ ?>

<!--[if IE]>
    <link rel="stylesheet" type="text/css" href="https://wordpress.stackexchange.com/questions/53149/<?php echo get_bloginfo("stylesheet_directory'); ?>/ie-only.css" />
<![endif]-->

<?php } 

Now create a css file with this name (ie-only.css) and put that into your theme’s directory.