It is not necessary to uninstall the preceding edition but you must update each CD following the process indicated at the time of its launch. ###>Vous n'Ãªtes pas obligÃ©s de dÃ©sinstaller lâEUR(TM)Ã©dition prÃ©cÃ©dente mais de rÃ©actualiser chaque CD en suivant le processus indiquÃ© lors son lancement.