In your customer.tpl file:
Code:
<div id="trustLogo">
<center>
<a href="http://www.instantssl.com" id="comodoTL">SSL</a>
<script type="text/javascript">TrustLogo("http://www.mysite.com/images/tl_transp.gif", "SC4", "none");</script>
</center>
</div>
In your css file:
Code:
#trustLogo {
margin-top: 10px
}