o If the pen of a tablet PC is set such that "Press and Hold" of the pen results in a right-click, it may be required to disable this setting to be able to run the experiments smoothly.
o Go to Control Panel -> Hardware and Sound(in Vista) -> Pen and Input Devices -> Pen Options.
o Click on Press and Hold and go to Settings.
o Uncheck "Enable press and hold for right clicking".
o Press OK and Apply.