Learn about XML
http://www.microsoft.com/china/msdn/library/rchives/library/dnxml/html/understxml.asp
Why use XML
Http://www.microsoft.com/china/msdn/library/archives/technic/xml/general/whyxml.asp
Understand the namespace of XML
http://www.microsoft.com/china/msdn/library/data/xml/understandingXMLNameSpaces.mspx
XPoint New Specification
Http://www.zdnet.com.cn/developer/tech/story/0,2000081602,39136094,00.htm
