This proposed pilot trial is innovative from both research and clinical practice perspectives.  From a research perspective, it would be the first to determine feasibility of delivering evidence-based cognitive behavioral intervention techniques using an electronic delivery format with social support as a primary construct of Social Cognitive Theory to mediate the response of physical activity behavior within a multiple sclerosis population.  From a clinical perspective, if, as hypothesized, an electronic-based delivery format of the cognitive behavioral intervention results in increased levels of physical activity with secondary improvements to quality of life, it will provide evidence that electronic delivery formats could represent an efficacious and cost-effective alternative with potential for widespread dissemination and impact for members of the multiple sclerosis population.  Findings from the pilot trial could provide initial evidence leading to greater integration of physical activity approaches in the routine care and self-management of persons with multiple sclerosis.  Additionally, if the hypotheses are supported, the results could provide support for the utility of creating partnerships that develop and implement sustainable, cost effective cognitive behavioral interventions that could expand current community-based approaches available to persons dealing with multiple sclerosis.