Xp, 2.4/800, 1.5 GB Mushkin, 320 Hn HD. I d/l IE 7.0 and checked a new program online. anyway, A/V is locked-will not scan, system Restore shows NO date to fall back to. I can d/l the latest win XP Updates. I can't type in on my online accounts or do mail. I tried McAfee's Stinger, did not find anything. without system Restore, my only chioce is format/reinstall? I already deleted IE7 and a few reboots. Spyware programs run OK. Advanced System Care is not finding anything. ideas?? thanks guys