Here is how to calibrate your Promethean Board using the Windows 7 taskbar.

1). Select the triangle on the bottom right of the taskbar of a PC.

task1

2). Select the Promethean icon – PC  (You will find this icon in the menu bar at the top of the screen on a Mac)

task2

Select calibration from the menu.  Then select 5 points.

task4

Calibration points will appear on your Promethean Board.  Follow the on-screen directions.