An example of how to properly add additional links in Magento

cms.xml

<layout version="0.1.0">
<default>
	<reference name="top.links">
		<action method="addLink" translate="label title" module="page">
			<label>About</label>
			<url>about-us</url>
			<prepare>true</prepare> <!-- This is necessary if we are going to add the base URL --> 
			<title>About</title>
			<urlParams />
			<position>90</position>
		</action>
	</default>
</layout>