Subjects will serve as their own controls in the study. Participants will be asked to keep track of their smoking and to answer questions about their smoking using two formats: paper and pencil forms and forms programmed on Palm Pilots. For the Palm Pilot recordings, participants will be loaned a Palm Pilot to use to answer questions about their smoking whenever they smoke. Palm recordings and paper and pencil recordings will be compared to salivary cotinine and carbon monoxide levels. To control for the effects of one data collection strategy being used before the other, subjects will be randomized to do either paper and pencil recordings or palm recordings first. We will also teach clients a basic behavioral strategy ("the four D's") for cutting down on the amount of cigarettes smoked. The four D's stand for 1) deep breathing, 2) drink fluids, 3) delay, and 4) do something else. The paper and Palm Pilot versions of the questionnaires will include a reminder about the four D's to encourage participants to cut down on the amount of cigarettes smoked per day. In addition, participants will be asked to fill out the Hughes-Hatsukami Scale, which is a measure of nicotine withdrawal symptoms.