Version 1.1 of the .NET framework supports today’s mainstream XML technologies including DTDs, XML Schema, XSLT, XPath, SOAP 1.1, DOM Level 2, and XML namespaces. While version 2 of the framework continues to support these technologies (and newer versions where appropriate), it also adds significantly more perfomant XSLT transformations, enhanced XmlReader and XmlWriter APIs, plus a more powerful XPathNavigator class (to name a few of the enhancements). I've put together some code that shows how to leverage several of the new XML APIs found in .NET version 2.  You'll find the code available at the following URL:

http://www.xmlforasp.net/CodeSection.aspx?csID=107