If I have understood the question correctly (and if it's still relevant), I think this should be what you want to do:
Imports System.Threading
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Process.Start(Environment.GetFolderPath(Environment.SpecialFolder.MyComputer))
End Sub
End Class