Install the drivers from the included Driver CD (even on Windows XP).
The left mosue button is located on the keyboards’s rear side on the left side, the right mouse button is located on the keyboard’s rear side on the right side.
Otherwise than noted in the manual, the installation is handled like this :
1.) Connect USB dongle with PC and press „Connect“-button
2.) Press „Connect“-button on keyboard.
Press the NUMLOCK-key frst.