Multithreading in VB.Net

Hello im new to this site so forgive me if I have broken any rules here...
I am writing a test application to aid me in the Threading class
how ever when i invoke (for thread safety) the process actualy runs on the same thread, I have looked everywhere on line for an answer but no dice...
My source code is as follows...

Imports System.Threading
Public Class Form

    Private pass As Integer = 0
    Private Delegate Sub CallBack(ByVal No As Integer)

    Public Sub New()
        InitializeComponent()
        Me.Text = "MultiThreading - Main Thread ID: " & Thread.CurrentThread.ManagedThreadId
    End Sub

    Private Sub Button_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button.Click
        Dim t As Thread = New Thread(AddressOf AddItem, 0)
        t.GetHashCode()
        t.SetApartmentState(ApartmentState.MTA)
        t.IsBackground = True
        t.Start(pass)
        pass = pass + 1
    End Sub

    Private Sub AddItem(ByVal ItemNo As Integer)
        If ListBox.InvokeRequired = True Then
            ListBox.BeginInvoke(New CallBack(AddressOf AddItem), ItemNo)
        Else
            ListBox.Items.Add("Item Number " & ItemNo & " - Added by Thread ID: " & Thread.CurrentThread.ManagedThreadId)
        End If
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim t As Thread = New Thread(AddressOf MSGTest)
        t.Start("Test Message")
    End Sub

    Private Sub MSGTest(ByVal MSG As String)
        MsgBox(MSG & "...   MsgBox Generated by Thread ID: " & Thread.CurrentThread.ManagedThreadId, MsgBoxStyle.Information, "Thread Test")
    End Sub
End Class

The test function works but that does not use any invoke,
Any help would be great as I have spent some time working this one out.

Thanks in advanced... Blingking01

Tags: Visual Basic, Threads