Partendo da questo Xml (soap) come memorizzo i valori di Message, Identity, Type etc... in variabili da riutilizzare nel sito?

codice:
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
	<GetHistoricalSpotPriceRangeResponse xmlns="http://www.xignite.com/services/">
		<GetHistoricalSpotPriceRangeResult>
			<Outcome>RegistrationError</Outcome>
			<Message>
				XigniteMetals: Maximum number of unregistered requests exceeded. Consider registering or subscribing to expand usage. Your request was authenticated using  your IP address (23.23.23.23). Please visit http://www.xignite.com/RegistrationHelp.aspx for more information.
			</Message>
			<Identity>IP</Identity>

			<Delay>0</Delay>
			<Type>ARE</Type>
			<Currency>USD</Currency>
		</GetHistoricalSpotPriceRangeResult>
	</GetHistoricalSpotPriceRangeResponse>
</soap:Body>
</soap:Envelope>