how can i turn the pilot light on on my worcester heatslave 9.24?

Take of the front panel as you look at the boiler to the left is a grey button push this in that turns on the gas then to the right there is a black button thats the igniter button so keeping the grey button pressed in press the igniter button and the pilot should light there is also just above it a small window where you can see if the pilot has lit

keith
August 2007