How do I customize the New User Email?

Protected Overrides ReadOnly Property MailBody(ByVal User As BirdDogSoftware.Interfaces.IUser) As String

    Get

        Dim sBody As String

        sBody = "Thank You " & User.Name & vbCrLf & _

        "Your user name is" & User.LoginID & vbCrLf & _

        "Your password is " & User.Password

        Return sBody

    End Get

End Property