3DS max easy windows plug-in
I have just created my new 3DS max 2012 plugin for creating windows out of box.
Just make a box in window hole, divide it as you need, that would be the division of the window. After clicking make windows in scene, all boxes will be remade to windows. You can choose from detailed windows with maximum 3x3 divisions, or make a low poly windows with any divisions you need. you can also add a windowsill to the window.
tutorial is here: