Config URL Rewrite Definition

<config>
    <global>
        <rewrite>
            <namespace_module>
                <from><![CDATA[#^/some/regex/([a-z]*/?$#]]></from>
                <to><![CDATA[/frontname/whatever/whatever/blah/$1]]></to>
            </namespace_module>
        </rewrite>
    </global>
</config>