4. Subjects will be trained to record their smoking behavior using a Palm Pilot version of the recording form. Subjects will be loaned a Palm Pilot that will be programmed to present a computerized version of the smoking behavior monitor form that was used to make paper and pencil recordings. Subjects will be asked to hit a button on the Palm Pilot whenever they have an urge to smoke, and to complete the recordings on the Palm Pilot in the same manner as they did with paper-and-pencil recordings. However, Palm Pilots will be set to beep 1x per day (participant's stated wake-up time) to prompt participants to make a summary recording of number of cigarettes per day and to complete the Hughes-Hatsukami Scale. Additionally, the morning questionnaire will include a reminder screen that encourages participants to make the recordings and to practice the four D's. Subjects will practice using the Palm Pilot over Week 2.