CSS :

ul.this{
list-style-image: url(http://www.hscripts.com/images/icon.gif);
font-size: 11px;
} 

HTML :

<h4>An Unordered List:</h4>
<ul class=this>
<li>Coffee</li>
<li>Tea</li>
<li>Milk</li>
</ul>
<ul>
<li>Coffee</li>
<li>Tea</li>
<li>Milk</li>
</ul>