Are there any natural aids to help me quit smoking?

I have been smoking for about 2 years now, for obvious reasons, and a family history of lung disease, I really want to quit. I smoke about .5 a pack a day, and just like any other smoker, I get anxious when I don't smoke for a day. I realize I shouldn't have started in the first place, but I am going to quit cold turkey. I have heard that when people quit smoking the healing process of your lungs creates bronchitis like symptoms for a while. I'm looking for suggestions as to what kind of natural products or suggestions I can get rid of this habit with, and hopefully try to avoid a nasty cough!