That should be quite easy: simply change the class from which your form derives in your code-behind file (Form1.vb for instance). In VB you should have something like:
Public Class Form1 Inherits Form
Change the class from the default Form to the custom WindowsFormsAero.Dwm.Helpers.GlassForm class:
Public Class Form1 Inherits WindowsFormsAero.Dwm.Helpers.GlassForm
That should be enough to enable the additional glass properties in the Visual Studio designer. The important properties you might want to change are GlassEnabled (boolean, to enable the glass effect), GlassDesignerMargins
(to define the size of the glass margins) HandleMouseMove (to automatically handle window dragging on glass) and
HideTitle (to hide the window title).
This should work with the latest version of the library available.