[nirvAnA]

Gambling addictions are hard to kick because its a behaviour change and behaviour changes are extremely difficult. I am not an expert in handling these matters but i feel in this scenario although its going to sound as corny as hell, since you are the next male in the family you have to start stepping up and being the Alpha Male in your family in order to protect them.

Do not allow your father to use the laptop, and control the way he is spending his money. Don't do this in a confrontational way but when things are cool and relaxed. Maybe when your father is sober and rational, get your family together and sit together and have a talk. Make him realise he is destroying his family and if he admits he can't control his actions anymore, ask him to give access to his finances / credit card to your mom or yourself. Everyone is in this together, it will be for his and the family's benefit and you are all trying to help him.

When the great wolf has fallen you must rise up, take his place and lead your pact to greatness! All the best man