Alcoholism

My brother is abusing alcohol extensively. He started drinking socially, but it has now progressed in such a manner that he drinks more that 3 nights per week and have also been chased away from work once. He, however does not believe that he has a problem and sees his life as one big party and everything is always a joke to him. His wife has asked him numerous times to stop partying so much as he is setting a bad example for his kids. He passed out on the floor the other day and when the kids woke up they thought he was dead. He also does not care if there is food in the house and whether he pays his rent or not. Talking to him and trying to make him see reality is useless and he thinks we are all against him. Trying to get him to go to rehab will also fail if he does not realise he has a drinking problem by himself. He is in denial and we do not know how to help him. Please could you give us some tips as to how to help him.