Smoking cessation interventions are needed for young adults. Innovative approaches to behavior change for this population should be tested. Formative research and process evaluation of those approaches would result in more effective programs. This paper presents the development process and process evaluation of a web-based smoking cessation program. A description of the stages of development is presented with formative research, development of the web-based intervention, formative evaluation, and process evaluation. The smokers reported high usage of the intervention and satisfaction with the intervention in that it helped to raise their consciousness about quitting, encouraged them to set behavioral goals, provided stages of change feedback, and offered interactivity in presenting information and strategies about quitting. The Internet may be a promising tool for patient education according to the process results.