The article describes the process and the findings of a Participatory Action Research (PAR) conducted with young people in Bosnia and Herzegovina (BiH) in 2003, with an aim to develop a communication strategy for the prevention of HIV/AIDS in BiH. The study was initiated and funded as part of a global UNICEF initiative bearing the same name and aims. The process included the development of three youth research teams in three towns in BiH--Sarajevo, Tuzla and Banja Luka, that worked with their peers in their communities with a support from a Head Researcher with PAR experience. The young people developed a prevention strategy that includes peer education in elementary and high schools and co-operation with the media.