How do I get rid of fake antivirus software and its "Security Toolbar 7.1"?

someone accidentally downloaded this while they were using my computer. I've deleted every file I can find attached to this so-called security; however, I can't get the toolbar off, and I can't get the icon off the bottom toolbar. This is soooo annoying and sneaky. They made it look like a windows error message, but it was some other company. How do I get this crapola off?

How do I get rid of fake antivirus software and its "Security Toolbar 7.1"?anti virus protection

system restore then delete restore points

How do I get rid of fake antivirus software and its "Security Toolbar 7.1"?antivirus

Go here and see if this will help you.

It requires reading and following the intructions.

http://forums.techguy.org/malware-remova...
You can try the following programs, and perform a thorough spyware and virus scan on your computer:

Spyware Terminator (Can scan for viruses as well)

http://www.spywareterminator.com/

AVG Anti-Virus

http://www.grisoft.com/doc/download-free...

Ad-Aware 2007 Free

http://www.lavasoft.com/products/ad_awar...

Rootkit Protection:

http://www.grisoft.com/doc/download-free...

All of these programs are free.
I have the same problem. if i can get rid of it I will let you know how!
Your computer has a Smitfraud infection.