Problem with Me: "Me it's only valid in a instance method"

[kilofafeure]

Hi, I'm trying to make a winform (vb, VS2008) application that permits take a file from your hard drive and process it. I've tried to create a empty project with the structure but it appears empty. Until now I've this:
Inicio.Designer.vb:

<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class Inicio
    Inherits System.Windows.Forms.Form

    'Form reemplaza a Dispose para limpiar la lista de componentes.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        Try
            If disposing AndAlso components IsNot Nothing Then
                components.Dispose()
            End If
        Finally
            MyBase.Dispose(disposing)
        End Try
    End Sub

    'Requerido por el Diseñador de Windows Forms
    Private components As System.ComponentModel.IContainer

    'NOTA: el Diseñador de Windows Forms necesita el siguiente procedimiento
    'Se puede modificar usando el Diseñador de Windows Forms.
    'No lo modifique con el editor de código.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.lbl_ArchivoAProcesar = New System.Windows.Forms.Label
        Me.lbl_Modelo = New System.Windows.Forms.Label
        Me.lbl_FechaFacturacion = New System.Windows.Forms.Label
        Me.tb_ArchivoAProcesar = New System.Windows.Forms.TextBox
        Me.bt_ArchivoAProcesar = New System.Windows.Forms.Button
        Me.cb_Modelo = New System.Windows.Forms.ComboBox
        Me.tb_FechaFacturacion = New System.Windows.Forms.TextBox
        Me.bt_Procesar = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'lbl_ArchivoAProcesar
        '
        Me.lbl_ArchivoAProcesar.AutoSize = True
        Me.lbl_ArchivoAProcesar.Location = New System.Drawing.Point(12, 26)
        Me.lbl_ArchivoAProcesar.Name = "lbl_ArchivoAProcesar"
        Me.lbl_ArchivoAProcesar.Size = New System.Drawing.Size(100, 13)
        Me.lbl_ArchivoAProcesar.TabIndex = 0
        Me.lbl_ArchivoAProcesar.Text = "Archivo a Procesar:"
        '
        'lbl_Modelo
        '
        Me.lbl_Modelo.AutoSize = True
        Me.lbl_Modelo.Location = New System.Drawing.Point(12, 61)
        Me.lbl_Modelo.Name = "lbl_Modelo"
        Me.lbl_Modelo.Size = New System.Drawing.Size(45, 13)
        Me.lbl_Modelo.TabIndex = 0
        Me.lbl_Modelo.Text = "Modelo:"
        '
        'lbl_FechaFacturacion
        '
        Me.lbl_FechaFacturacion.AutoSize = True
        Me.lbl_FechaFacturacion.Location = New System.Drawing.Point(13, 91)
        Me.lbl_FechaFacturacion.Name = "lbl_FechaFacturacion"
        Me.lbl_FechaFacturacion.Size = New System.Drawing.Size(99, 13)
        Me.lbl_FechaFacturacion.TabIndex = 0
        Me.lbl_FechaFacturacion.Text = "Fecha Facturación:"
        '
        'tb_ArchivoAProcesar
        '
        Me.tb_ArchivoAProcesar.Location = New System.Drawing.Point(131, 23)
        Me.tb_ArchivoAProcesar.Name = "tb_ArchivoAProcesar"
        Me.tb_ArchivoAProcesar.ReadOnly = True
        Me.tb_ArchivoAProcesar.Size = New System.Drawing.Size(437, 20)
        Me.tb_ArchivoAProcesar.TabIndex = 0
        '
        'bt_ArchivoAProcesar
        '
        Me.bt_ArchivoAProcesar.Location = New System.Drawing.Point(586, 22)
        Me.bt_ArchivoAProcesar.Name = "bt_ArchivoAProcesar"
        Me.bt_ArchivoAProcesar.Size = New System.Drawing.Size(75, 23)
        Me.bt_ArchivoAProcesar.TabIndex = 1
        Me.bt_ArchivoAProcesar.Text = "Buscar"
        Me.bt_ArchivoAProcesar.UseVisualStyleBackColor = True
        '
        'cb_Modelo
        '
        Me.cb_Modelo.FormattingEnabled = True
        Me.cb_Modelo.Location = New System.Drawing.Point(131, 58)
        Me.cb_Modelo.Name = "cb_Modelo"
        Me.cb_Modelo.Size = New System.Drawing.Size(192, 21)
        Me.cb_Modelo.TabIndex = 2
        '
        'tb_FechaFacturacion
        '
        Me.tb_FechaFacturacion.Location = New System.Drawing.Point(131, 88)
        Me.tb_FechaFacturacion.Name = "tb_FechaFacturacion"
        Me.tb_FechaFacturacion.Size = New System.Drawing.Size(71, 20)
        Me.tb_FechaFacturacion.TabIndex = 3
        Me.tb_FechaFacturacion.Text = "AAAA_MM"
        '
        'bt_Procesar
        '
        Me.bt_Procesar.Location = New System.Drawing.Point(15, 128)
        Me.bt_Procesar.Name = "bt_Procesar"
        Me.bt_Procesar.Size = New System.Drawing.Size(75, 23)
        Me.bt_Procesar.TabIndex = 4
        Me.bt_Procesar.Text = "Procesar"
        Me.bt_Procesar.UseVisualStyleBackColor = True
        '
        'Inicio
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(676, 172)
        Me.Controls.Add(Me.bt_Procesar)
        Me.Controls.Add(Me.tb_FechaFacturacion)
        Me.Controls.Add(Me.cb_Modelo)
        Me.Controls.Add(Me.bt_ArchivoAProcesar)
        Me.Controls.Add(Me.tb_ArchivoAProcesar)
        Me.Controls.Add(Me.lbl_FechaFacturacion)
        Me.Controls.Add(Me.lbl_Modelo)
        Me.Controls.Add(Me.lbl_ArchivoAProcesar)
        Me.Name = "Inicio"
        Me.Text = "Tratamiento Ficheros Facturación"
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub

    Friend WithEvents lbl_ArchivoAProcesar As System.Windows.Forms.Label
    Friend WithEvents lbl_Modelo As System.Windows.Forms.Label
    Friend WithEvents lbl_FechaFacturacion As System.Windows.Forms.Label
    Friend WithEvents tb_ArchivoAProcesar As System.Windows.Forms.TextBox
    Friend WithEvents bt_ArchivoAProcesar As System.Windows.Forms.Button
    Friend WithEvents cb_Modelo As System.Windows.Forms.ComboBox
    Friend WithEvents tb_FechaFacturacion As System.Windows.Forms.TextBox
    Friend WithEvents bt_Procesar As System.Windows.Forms.Button

End Class

Inicio.vb:

Imports Facturacion
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Data
Imports System.Data.SqlClient
Imports System.IO
Imports System.Net
Imports System.Configuration
Imports System.Collections.Generic

Namespace WindowsFormsApplication1 

    Public Sub Main()
        Rellenar_cb_Modelo()
    End Sub
    Public Sub Rellenar_cb_Modelo()
        Try
            Dim ds As New DataSet
            Dim cs As ConnectionStringSettings
            Dim cmd As New SqlCommand()
            Dim da As New SqlDataAdapter()
            cs = ConfigurationManager.ConnectionStrings("ODP.SCGC")
            Dim connString As String = cs.ConnectionString
            Dim dbConnection As New SqlConnection(connString)
            cmd = New SqlCommand("SELECT COD_MODELO, TIPO FROM FACT_TXT_MODELOS WHERE COD_ESTADO = @codigo_estado", dbConnection)
            cmd.Parameters.Add(New SqlParameter("@codigo_estado", 2))
            cmd.Parameters("@codigo_estado").Direction = ParameterDirection.Input
            cmd.CommandType = CommandType.Text
            da.SelectCommand = cmd
            da.Fill(ds)
            Me.cb_Modelo.DataSource = ds.Tables(0)
            Me.cb_Modelo.DisplayMember = ds.Tables(0).Columns(1).Caption.ToString()
            Me.cb_Modelo.ValueMember = ds.Tables(0).Columns(0).Caption.ToString()
        Catch ex As Exception
            Core.Log4Net.SaveError(ex)
        End Try
    End Sub

End Namespace

Doing this I'm obtainning 2 identical errors: "The instruction it's not valid in a namespace"
Looking info I've found that I should add something like this:

Imports System.Collections.Generic
Imports System.Linq
Imports System.Windows.Forms

Namespace WindowsFormsApplication1
        NotInheritable Class Program
                Private Sub New()
                End Sub
                ''' <summary>
                ''' Punto de entrada principal para la aplicación.
                ''' </summary>
                <STAThread> _
                Private Shared Sub Main()
                        Application.EnableVisualStyles()
                        Application.SetCompatibleTextRenderingDefault(False)
                        Application.Run(New Form1())
                End Sub
        End Class
End Namespace

but here appears my problems again.

Namespace WindowsFormsApplication1 

    NotInheritable Class Program
        Private Sub New()
        End Sub
        ''' <summary>
        ''' Punto de entrada principal para la aplicación.
        ''' </summary>
        <STAThread()> _
        Private Shared Sub Main()
            Application.EnableVisualStyles()
            Application.SetCompatibleTextRenderingDefault(False)
            Application.Run(New Inicio())
            Rellenar_cb_Modelo()
        End Sub

        Public Shared Sub Rellenar_cb_Modelo()

        End Sub

    End Class
End Namespace

If I make this I'm obtainning the message: "Me it's only valid in a instance method". And if I take out the Shared I obtain 2 different errors:
1. Cannot refer to an instance member of a class from within a shared method or shared member initializer without an explicit instance of the class.
2. cb_Modelo it's not a "FicheroFacturacion.WindowsFormsApplication1.Program" member.
Any idea how to solve this? and more important, why? if it's not possible any idea will be appreciated. Thanks in advance.

[kilofafeure]

Solved, the solutions was this:

Imports Facturacion
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Data
Imports System.Data.SqlClient
Imports System.IO
Imports System.Net
Imports System.Configuration
Imports System.Collections.Generic

Public Class Inicio 

    Public Sub Main()
        Rellenar_cb_Modelo()
    End Sub
    Public Sub Rellenar_cb_Modelo()

The problem was that I was modifying the original file that was using a Module and loading the paths since the app.config and then I couldn't see the design view and the IDE couldn't show the errors.