Changing the window in an exterior door
I think I understand what you are after... Is what you are saying is that the out side of the door is now on the inside and vice-versa?  Many Fiberglass doors do look the same on both sides and have decoritive windows that look different from the inside verses the outside.  If this is the case the window should be held in the door with a series of philips head screws. you should be able to unscrew the window and turn it around.  Sometimes the screws are covered with little plastic buttons that match the plastic frame molding that is around the window, just pry them out and you should be able to reverse the window.