Resources can be found http://msdn.microsoft.com/en-us/library/dd251056.aspx
When compiling the sample program from the official website, you will find there is one class “LiveSearchService” missing. This class is in fact generated by a VisualStudio tool, wsdl.exe, in VS-> Tools-> VS 2005 command
In the Command window, type: “wsdl.exe http://api.search.live.net/search.wsdl“ (without quoation mark). This will generate the LiveSearchService.cs in the VS Installation Folder\vc\bin\ folder. Copy and paste this file and insert it into the project, now run the sample project, it works!