Yo lo hago asi
Código HTML:
<div id="cab">
<img src="imagenes/banner.gif" width="468" height="60" style="float:right; margin:20px 20px" />
<h1>Titulo</h1>
</div>
css
Código:
#cab{
background-image: url(../images/inter_r1_c1.png);
background-repeat: no-repeat;
height: 125px;
}
#cab h1{
font-size: 0px;
background-image: url(../images/logo.png);
background-repeat: no-repeat;
display: block;
height: 90px;
width: 240px;
}