/app/design/frontend/base/default/template/catalog/navigation/top.phtml

<li><a href="<?php echo $this->getUrl('contacts')?>"><?php echo $this->__('Contact Us') ?></a></li>
<li><a href="<?php echo $this->getUrl('faq')?>"><?php echo $this->__('FAQ') ?></a></li>
<li><a href="<?php echo $this->getUrl('aboutus')?>"><?php echo $this->__('About Us') ?></a></li>