All you need is a 35 inch piece of 2x4, 7 screws, velcro (the hard side), and staples (optional).
Screw the 2x4 to the wall and add velcro.
Add 3 screws above the 2x4.
Front Side Window
Both Side Windows
Hang Back Window on nails on top of other windows.
Hope this helps anyone looking for...