TCP/IP Connect Question

[albertkhor]

Dim Listener As Sockets.TcpListener
Listener = New Sockets.TcpListener(System.Net.IPAddress.Any, 12200)
Listener.Start()

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Private _listen As Sockets.Socket
Dim endPoint As New IPEndPoint(System.Net.IPAddress.Any, 12200)
_listen = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
_listen.Blocking = True
_listen.Bind(endPoint)
_listen.Listen(0)
RaiseNotifyEvent(NotifyCommand.Listen, endPoint.Address.ToString())
_listen.Accept()

I'm newbie in TCP/IP, can some one tell me wat is the different above code? And also different between Sockets.Socket & Sockets.TcpListener