It is quite simple for IE:
<!--[if IE]>
@import url(ie-styles.css);
<![endif]-->
If you want to use for a specific version of Microsoft Internet Explorer :(replace the ‘ver’ with version number)
<!--[if IE ver]>
<link rel="stylesheet" type="text/css" href="ie-ver.css" />
<![endif]-->
Just add this code to your header.php file, also provide the path to your special css file
hope this will work for you..
