Security Toolbar Removal

You have a virus on my computer. How I can check whether the firewall is enabled? (Windows XP) This virus is …..?
themselves it looks like a legitimate anti-virus and have no idea how he got there.Keep get pop-ups makes me want to subscribe to the service of the kidnapping. Its on my bar tool at the bottom like a shield of stripes (yelloish black and orange) and when moving the cursor, it seems that the security system version 5.52 … really frustrating … How I can delete this program or what remained where I can go and clean … also my firewall issue …. need to put a firewall … thanks for any help or suggestions
here's manual removal of security assistance system: http://www.spywarevoid.com/remove-system-security-452-systemsecurity-452-removal-help.html follow step by step tutorial to remove the infection.
How To Remove Security Toolbar 7.1