Asthma is a common cause of illness and lost productivity, including missed days of work and school, in the United States. It is important for people with asthma to become involved in their treatment and care. Previous studies have shown that encouraging people to ask their doctor for various medical tests and treatments improves preventive care (e.g., cancer screenings), but more research is needed on the effect this can have on asthma management. This study will involve an interactive Web site that will ask patients questions about their asthma symptoms and medications and provide suggestions and feedback on the types of questions patients may want to ask their doctors. By asking questions about their asthma care and increasing communication with their doctor, patients may experience improved quality of asthma care and better asthma control. The purpose of this study is to evaluate the impact of the interactive Web site on asthma control and other measures of asthma management.