2A Conferencia Iberica de Sistemas e Tecnologias de Informacao: Novas Perspectivas Em Sistemas e Tecnologias de Informacao, Cisti 2007 - 2Nd Iberian Conference on Information Systems and Technologies: New Perspectives on Information Systems and Technologies, Cisti 2007, Date: 21 June 2007 through 23 June 2007, Sponsors: Caixa Geral de Depositos;Foundation Eng. Antonio de Almeida;Microsoft Portugal;National Communications Authority (ANACOM)