Mail Distribution Lists

    I am using Dreamweaver for our building site and also for my
    class site. We use Microsoft Outlook for our mail. My
    principal would like to create a distribution list to mail
    info to parents. He mentioned that he wanted something that
    would allow the parents to sign up and have their email
    address automatically added to the distribution. I told him
    I had no idea how to do that and suggested that each address
    could be added manually. Does anyone know if it can be set
    up the way he wants it or should we just go with a manual