nao entendi o k keres, mas n é isto?
<div id="headerwrapper">
<div id="header">
<a href="<?php bloginfo('siteurl'); ?>" title="<?php bloginfo('name'); ?>" class="logo"></a>
<?php include('ads/header468x60.php'); ?>
</div>
<!--end: header-->
ou isto, para mostrar o h1
/*---------------------------------------------------------------------------------*/
/* HEADER */
/*---------------------------------------------------------------------------------*/
#headerwrapper{ background:none; width:970px; margin:15px auto 0px auto; padding:0px; }
#header{ background:none; height:80px; }
.logo{ background:url(images/logo.png) no-repeat; float:left; width:350px; height:60px; margin:10px 0px 0px 0px; padding:0px; }
.logo h1 { display: inline; }
.ad468x60{ float:right; width:468px; height:60px; padding:0px; }
.ad468x60 img{ border:none; }