can anyone help me with what to do for css for IE (for blueprint css)
I have done
<?php $headlink = $this->headLink();        
    $headlink->appendStylesheet($this->baseUrl('css/blueprint/screen.css') , 'screen, projection')
        ->appendStylesheet($this->baseUrl('css/blueprint/ie.css'), 'screen, projection', "IE")
        ->appendStylesheet($this->baseUrl('css/blueprint/print.css'));
    echo $headlink;
?>
and this code didn't work either
<?php $headlink = $this->headLink();        
    $headlink->appendStylesheet($this->baseUrl('css/blueprint/screen.css') , 'screen, projection')
        ->appendStylesheet($this->baseUrl('css/blueprint/ie.css'), 'screen, projection', true)
        ->appendStylesheet($this->baseUrl('css/blueprint/print.css'));
    echo $headlink;
?>
UPDATES::
it shoudl look like
<!--[if lt IE 8]><link rel="stylesheet" href="css/blueprint/ie.css" type="text/css" media="screen, projection"><![endif]-->
 
     
    