Is there an alanon meeting in your area that you could attend? It's a very helpful program for those of us affected by another's drinking. Even if they aren't drinking at the moment, it might be worth looking into, to help you deal with the resentments, anger, and expectations that come with living with this disease.
Just quitting drinking is usually not the end all to problems. Alot of times it opens up a whole new can of worms. And all change, even for the better, takes time, and is difficult. But if one wants it enough, it is attainable. Are you sure he wants it as bad as you do?