Aser

Hi, I've just made an nlite disc of windows xp sp3 and installed it on my computer. Now I'm trying to install an antivirus software, but avg keeps saying "Unsupported windows version" . I tried installing Microsoft security essentials, but the real time protection won't turn on. Is there something that I've removed from XP that is stopping this software from working correctly? I've attached my last session config. Last_Session.ini