CursorUS 

CursorUS is an extremely simple application that allows you to extend the borders of your desktop, thus enabling you to navigate it moving your mouse continuously from side to side. With this small program you won't have to drag your mouse all across the desktop anymore, since when you move your mouse at the right edge of your screen, it will appear directly on the left edge. The same applies for the the upper and lower edge of your desktop. The application does not have a formal user interface; it sits on your system tray from where you can enable or disable the effect and also configure the options. It also allows you to select the borders in which you want to disable the effect, select hotkeys to control the program, and set keys for temporary blocking of the effect. The application not only does it work with a mouse but also with a trackball. The program supports Windows 95/98/Me/NT/2000/XP/2003 Server/Vista, is absolutely free and comes in multiple languages such as German, Spanish, Ukrainian, Italian, Japanese and some others.