Ver 4.0 Small - For Win XP, Vista & Win 7 Ver 4.0 Large - For Win XP, Vista &Win 7 Ver 3.0 Small - For Win XP, Vista & Win 7 Ver 3.0 Large - For Win XP, Vista &Win 7 Ver 2.0 - For Win XP, Vista & Older Ver 1.81 - For Win XP & Older Ver 1.71 - For Win 98 & Older