I've found a way to get rounded corners with IE

[CK]

Here's what I put, unfortunately it made no difference.

#bsb {
background-color: #686968;
behavior:url(border-radius.htc); 
border-radius: 5px;
-moz-border-radius-top{vb:stylevar left}:20px;
-moz-border-radius-top{vb:stylevar right}:20px;
-webkit-border-top-{vb:stylevar left}-radius:20px;
-webkit-border-top-{vb:stylevar right}-radius:20px;
-khtml-border-top-{vb:stylevar left}-radius:20px;
-khtml-border-top-{vb:stylevar right}-radius:20px;
border:10px solid #686968;
_border: none;
}