A growing body of evidence supports the efficacy of computerized cognitive behavioural therapy (CCBT). This technology has the potential to increase the capacity of mental health services, and to overcome some of the barriers to accessing mental health services, including stigma, traveling time for rural patients, treatment delays, and the low availability of skilled clinicians. This review discusses key issues around the implementation of CCBT in current mental health services, and summarizes recent evidence for the efficacy of CCBT in anxiety and depression. Many CCBT systems exist, and the evidence for each varies in quality and quantity. It is concluded that CCBT, particularly guided by a therapist, represents a promising resource. However, considerable work needs to be done to develop CCBT techniques that are appropriate to Australasian populations, acceptable to patients and clinicians, easy to use, and are clinically and cost effective. Suggestions are made for further research and useful website addresses are provided to assist clinicians in familiarizing themselves with CCBT.