1. A method for the adaptation of a graphic user interface (GUI) designed for right-hand users, for the use of left-hand users, comprising the steps of: a) installing, on a computerized device, a window or browser interfaceable software layer for generating a handedness specific GUI; b) executing an operating system of said computerized device with said software layer; c) inputting to said software layer a change in handedness request; d) rebooting said computerized device using information related to said change in handedness request; and e) performing the following operations by said software layer; i) for an application running on said computerized device, identifying those objects of a corresponding handedness specific GUI that are controls; ii) intercepting positioning commands sent from said operating system to each of said controls; iii) generating new coordinates for said controls in response to said change in handedness request; and iv) changing coordinates of each of said controls to said new coordinates, respectively, whereby to adapt the appearance of said corresponding handedness specific GUI.