Hiding the form from alt-tab menu

Tried it in VB.NET Winforms app, but no luck. It's still shown in the alt-tab menu:

Protected Overrides ReadOnly Property CreateParams As System.Windows.Forms.CreateParams
       Get
           Dim cp As CreateParams = MyBase.CreateParams
           cp.ExStyle = cp.ExStyle Or &H80
           Return cp
       End Get
   End Property

An easier way to do this is:

Me.FormBorderStyle = FormBorderStyle.SizableToolWindow
Me.ShowInTaskbar = False

Just like it mentions in this article, The original author's... since the tip doesn't work, I hate to say "it looks like you've just copied & pasted" :doh: