impulse geronimo

[danq]

hi all
originally posted this elsewhere and was told it should be on the tech forum.
im a newbie so be gentle
got an impulse geronimo it is set for 25p play i would like to put it down to 10p as its a fun only machine and also change the jackpot payout is this possible?
can i adjust the alarm which come son after thw doors have been opened and shut as the neighbors are fed up with the noise
thanks all
danq