XmlNavigator / DocumentNavigator error CS0246

[manfred]

Hello,

I have this error with C# code

Compiler Error CS0246: The Type or Namespace Name <XmlNavigator> Could Not
be Found

or

Compiler Error CS0246: The Type or Namespace Name <DocumentNavigator> Could
Not be Found

All seem OK,

using System.Xml; is set ??

The code example is From MSDN
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnexxml/html/xml07242000.asp

I use Net Framwork v1.1.4322

All sample I find using System.Xml get me this kind of error !!!

Thank for Any help...

Manfred