I recently purchased Dark Souls off of amazon.  I launched it off of steam but it asked me to log in to a Games for Windows Live account.  I logged in using a very old email that I haven't used in years and it gave me a message saying "Your parent's Windows Live ID is invalid. Please change it."  I have no idea what this means and I called support and they could do nothing for me.  I tried making a new account but the CD Key is already attached to the old account.