I sent some questions to Privacyware Support. See below, I hope it will be useful to some of you. (XP FW means Windows XP firewall) To choose AV or AS is easy for me. To choose firewall is almost impossible. Maybe thats why I still use Windows XP firewall DSA is one of the alternatives I consider. I know DSA offer something Windows firewall does not. But could that be said about Windows firewall too? What does Windows firewall have that DSA does not have? I also consider DSA together with another FW instead of Windows FW. But that would have to be a FW without HIPS, so OA is out of the question.