Alcoholism/complications; Bupropion/therapeutic use; Neurotransmitter Uptake Inhibitors/therapeutic use; Nicotine/therapeutic use; Nicotinic Agonists/therapeutic use; Smoking Cessation/methods; Smoking Prevention; Tobacco Use Disorder/drug therapy; Administration, Cutaneous; Adult; Alcoholism/therapy; Bupropion/adverse effects; Community Health Services; Delayed-Action Preparations; Double-Blind Method; Female; Humans; Male; Middle Aged; Nebraska; Neurotransmitter Uptake Inhibitors/adverse effects; Nicotine/administration & dosage; Nicotine/adverse effects; Nicotinic Agonists/administration & dosage; Nicotinic Agonists/adverse effects; Patient Compliance; Research Design; Substance Abuse Treatment Centers; Time Factors; Tobacco Use Disorder/complications; Treatment Outcome; Veterans