How can I establish an internet connection using GPRS from my Pocket Pc application?

I tried this code but in gprs.Status i have ExclusiveConflict {40}. Where is the problem?

     Public gprs As New ConnectionManager

 Dim server As String = "http://www.google.com"
        Dim connected As Boolean = False

        gprs.Connect(gprs.MapUrl(server), False, ConnectionMode.Asynchronous)
        Application.DoEvents()

        While gprs.Status <> ConnectionStatus.Connected
            System.Threading.Thread.Sleep(2000)
            Application.DoEvents()


        End While