Logo/Header Problems in Explorer

I’ve adopted the blue zinfandel template. I’m wanting to include a logo that’s clickable in the header. I’ve managed to get it working in Mozilla, but *grrrr* I can’t get it to work with explorer… what could I be doing wrong?

This is how I included it in the style sheet…

#header {
background: #FFFFFF url(images/blslogo_small.jpg)center no-repeat;
width: 960px;
height: 75px;
margin: 0px auto 0px;
padding: 10px 0px 10px 0px;
text-align: center;
border-top: 5px solid #658DB5;
text-transform: uppercase;
}