To create the icons, create a shortcut on the desktop.

For Shutdown, the command is C:\WINDOWS\RUNDLL.EXE user.exe,exitwindows

For Restart, the command is C:\WINDOWS\RUNDLL.EXE user.exe,exitwindowsexec

For Logoff, the command is C:\WINDOWS\RUNDLL.EXE shell32.dll,SHExitWindowsEx 0