This project will assess an interactive, culturally adapted, tailored smoking cessation intervention delivered through the internet and cell phone. The evidence-based treatment, "Cognitive-Behavioral/Motivational Enhancement Therapy for Smoking Cessation" (CBME) for adolescent smokers was developed by one of the investigators. Based on input from our community partners, consultants, and youth focus group participants, the treatment will be culturally adapted for appropriateness and relevance to Korean youth. The refined intervention will be programmed for delivery via the Web and mobile technologies. Using technology, we seek to increase the reach and access of our intervention and facilitate cessation without in-person sessions, a factor that limits smoking cessation interventions for youth. A 2-group, randomized control trial design will assign youth either to the tailored Web and cell phone based smoking cessation program or to a control condition.