Hello. I have aquired a virus that installed a "Security Toolbar 7.1" on my computer that appears in the Windows Internet Explorer window. There are also popups and "warnings" about slow speed and my homepage was hijacked. I have reason to believe that the culprit is a zlob trojan. Can anyone assist me on removing this? I have Nortan Antivirus but it doesn't detect it for some reason. Thanks.

try this free online scan http://www.spywareinfo.com/xscan.php
and remove all it finds

Hopefully my advice will help you...Please post back with your results....thanks