HTML
<div id="Navigation">
<ul id="nav">
<li><a href="#">Item number 1</a></li>
<li><a href="#">Item number 2</a></li>
<li><a href="#">Item number 3</a></li>
<li><a href="#">Item number 4</a></li>
<li><a href="#">Item number 5</a></li>
</ul>
</div>

CSS
#nav
{
list-style: none;
}

#nav li
{
padding-left: 12px;
background-image: url("../img/mark07.gif");
background-repeat: no-repeat;
background-position: 0 .5em;
}