codice:
Imports System.Net
Imports System.Net.Mail
Public Class Form1
    Dim posta As New MailMessage()
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        posta = New MailMessage
        posta.From = New MailAddress("giovanni@tiscali.it")
        posta.To.Add("giovanni@hotmail.it")
        posta.Subject = "Saluti"
        posta.Priority = MailPriority.High
        posta.Body = TextBox3.Text

        Dim Smtp As New System.Net.Mail.SmtpClient("smtp.live.com")
        Smtp.ConnectType = SmtpConnectType.ConnectSSLAuto
        smtp.EnableSsl = True
        smtp.Credentials = New System.Net.NetworkCredential("mail@hotmail.it", "password")
        Smtp.Port = "587"
        smtp.Send(posta)
Mi da errore inserito così il comando o.O non capisco