高手相问,利用ASP怎样获取某指定子节点的值呢

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<books>
<book>
<bookID>1</bookID>
<author>Fleyor</author>
<des><![CDATA[ 主要讲的是关于XML的基础知识和相关的应用]]></des>
<price>$22</price>
</book>
<book>
<bookID>2</bookID>
<author>Winner</author>
<des><![CDATA[ flash应用]]></des>
<price>$55</price>
</book>
<book>
<bookID>3</bookID>
<author>4</author>
<des><![CDATA[ DLEPHI7数据库开发]]></des>
<price>$22</price>
</book>
</books>
---------------------
现想获取<bookID>为3节点的<price>的值?