How to replace the shell application with my own through c# code

after deep looking I still can't find a solution to my problem. My goal is to change the shell (explorer.exe) with my own application , and this should be done on each computer the application is run automatically , which means th开发者_开发百科at I will need some snippet of code in my application's constructor to do this. What I know for now is how to do it manually (through the Group Policy) but I need some C# code that will do it programatically , I suppose some way of managing the Group policy ... any help will be appreciated !

You can change the registry key HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\WinLogon\Shell