httpwebwitch - 6:26 pm on Jun 15, 2012 (gmt 0)
enclose the content in a <![CDATA]> node.
<![CDATA[ your $<%£& funny characters go here ]]>
CDATA is "character data", it's intended as an enclosure for data that should not be parsed as XML.
It's a good practice to use a CDATA node to enclose any string data, especially if it's user-generated data like names, addresses, comments etc.