"Windows Explorer example or tutorial.

[dynamic_sysop]

you could look in to IO.Directory and IO.File , here's an example of getting all directories in the C:\ area and adding to a treeview :

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim directory As IO.Directory
        Dim strPaths() As String = directory.GetDirectories("C:\")
        Dim x As Integer
 
        For x = LBound(strPaths) To UBound(strPaths)
            TreeView1.Nodes.Add(strPaths(x))
        Next
 
    End Sub