I have read the best way to edit the top links is to edit the local.xml such as
<reference name="top.links">
<action method="addLink" translate="label title"><label>Sign Up</label><url>customer/account/create</url><title>Sign Up</title><prepare>true</prepare><urlParams/><position>101</position><liParams>id="link-sign-up"</liParams>
<aParams>
<class>top-links-link</class>
</aParams>
</action>
</reference>
The issue here though is that the URL can not be translated eg say I wanted
English URL - /register
German URL - /registrieren
Spanish URL - /registro
What would be the best approach to get this?