Information and communication technology (ICT) have rapidly changed from office-based to mobile, then from wire to wireless. In such a innovative IT environment, a new way of conducting Electronic-Commerce (e-Commerce), called Mobile-Commerce (m-Commerce) has been rapidly adopted by individuals. Demand and interest of m-Commerce has rapidly increased for the last several years. Academic research, however, regarding behavior toward the m-Commerce has been scant. This study applied the Technology Acceptance Model (TAM) in order to study the adoption and use of m-Commerce. The research model proposed new constructs and casual relations, Perceived Ubiquity, Perceived Reachability, and Experience (E)as a moderator. The data, collected from 277 participants of online survey service, were tested against the model. The results of the study showed that not only the variables, except Perceived Usefulness, in the original TAM model, but also new variables in the research model had a significant influence on other variables. The implications of the findings suggest a new theoretical framework for future m-Commerce research and offers suggestions that the developers of m-Commerce should consider regarding the technology.