Some stupid anti-virus add...pls help me out?

every time i turn on my computer a stupid pop up wndow appears, here's the address http://www.errorsafe.com/pages/scanner/i...

currently i am using att-yahoo high speed internet and its anti-virus software...(including anti-spy, online protection, parentel controls, etc etc) and i scan my computer everytime after i get this add and it shows list of some infected files like "win32"..i m not sure if this is right

what should i do to get rid of it????

Some stupid anti-virus add...pls help me out?norton internet security 2008

ErrorSafe, which is a WinFixer clone, may be installed without permission. ErrorSafe may give exaggerated warnings of threats on the computer which tricks the user into purchasing a registered full version of the software in order to remove the reported threats.

Scan your PC with both of these to remove it. Both are free and safe to use.

Spybot - Search %26 Destroy detects and removes spyware, a relatively new kind of threat not yet covered by common anti-virus applications. Spyware silently tracks your surfing behaviour to create a marketing profile for you that is transmitted without your knowledge to the compilers and sold to advertising companies. If you see new toolbars in your Internet Explorer that you haven't intentionally installed, if your browser crashes inexplicably, or if your home page has been "hijacked" (or changed without your knowledge), your computer is most probably infected with spyware. Even if you don't see the symptoms, your computer may be infected, because more and more spyware is emerging. Spybot-S%26D is free.