Fixed Background Image Issue in IE8

The issue is the positioning is off to the right in IE as long as the background is fixed, once it is gone the background centers fine..

But I need the background image to stay put..

body {
font-size: 62.5%; /* Resets 1em to 10px */
font-family: ‘Lucida Grande’, Verdana, Arial, Sans-Serif;
background: url(‘images/wpbg.jpg’);
background-repeat: no-repeat;
background-attachment: fixed;
background-position: top center;
overflow-x:hidden;
margin: 0;
padding: 0;
color: #FFFFFF;
text-align: center;
}

Any help would be appreciated..