Can refer to the following:
MSDN WMI SDK: http://msdn.microsoft.com/library/default.asp? URL = / library / en-us / wmisdk / wmi / wmi_start_page.asp
WMI User Instructions (9CBS): http://www.9cbs.net/develop/Article/15/15346.shtm
WMI technology application for .NET (9CBS): http://www.9cbs.net/develop/Article/16/16419.shtm
Easily gain system information (1) -wmi article (9cbs) in .NET: http://www.9cbs.net/develop/Article/15/15744.shtm
