Problem...need help badly!!!

I'm using Compact Framework.

Imports System.Net
Imports System.Net.Sockets
Imports System.Net.Sockets.Socket


Public Class Connection
Dim _client As Socket
Public Sub Connect()

End Sub

End Class

CROSSFIRE - Field '_client' in type 'Project.Connection' is of an unsupported type 'System.Net.Sockets.Socket'.

Can someone please give me some advice ??

at first I thought that might be a type not included but here:
http://msdn.microsoft.com/library/de...orkclasses.asp
it appears to be included.

yeah, its included, but why do i keep getting that error ??