My query concerns the PS2 version of "Commandos 2, Men of Courage". Can someone please explain how the level codes or cheat codes are physically entered into the game so that I can move forward into different levels without having to comlete all previous levels.

I do not need the cheat codes themselves - these codes for all 10 levels seem to be readily available on the net. What I need is a detailed explanation of how / when / where / at which stage do the codes get entered into the game using the handset i.e. what buttons need to be pressed on the handset to enter the codes and where in the game do you enter them.

Please help me with this

Thankyou