[2005] Multiple Threading Help

[xzel]

I'm making a program that will sign people and preform automated things when logged in to a website. I have a list box of usernames and passwords. I know how to go through them and such but I am trying to make this multi threaded. I need to know if there is some way to create a specific number of threads for the number of items in the list box and if possible, have them numbered 0, 1, 2 etc.

For i As Integer = 0 To lbAccs.Items.Count - 1
        Me.Main = New System.Threading.Thread(AddressOf TreeSub)
        Me.Main.IsBackground = True
        Me.Main.Start()
        'if they stop the program before all threads have been created
            If cmdStart.Text = "Start" Then
                SetText(lbLog, Now & " : Program Stopped")
            End If
        Next

Any help would be great. Thanks.