 Outcome measures: The primary outcome measure will be nicotine craving assessed with the Tobacco Craving Questionnaire and visual analog scales before and after every TMS session and at one- and two-week follow-up. Secondary outcome measures will include cigarette smoking over the test period and at follow-up assessed by self-report, salivary cotinine levels, and expired breath CO levels. A follow-up fMRI will evaluate changes in regional brain activity associated with changes in craving and TMS treatments. 