Try this page, there are instructions further down page for manual removal.
http://www.2-spyware.com/remove-antivirus-360. html
Antivirus 360 is a brand new fake spyware remover, program with evil intent. Parasite, as many of its kind, tries to push user into purchasing of a licensed version with falsified threats. The name Antivirus 360 sounds very similar to respected security tool Norton 360 by Symantec. Application makes its own way into user�s computer via trojan Zlob or by manual download. After installation, parasite, flood user with numerous pop-ups with imaginary virus infections and system risks. After these notifications Antivirus360 advertises as an effective program that is able to fix all these problems, and of course it is paid one. Program is very dangerous, it mark windows files as an infections or serious threats. The main purpose of it is to show pop-ups and suck money. About fixing of infections you can forget it wasn�t created for that. As a parasite, Antivirus360 can do many serious problems for users, slowdown computer, limit connection of internet, increase loses of personal data and even brake your machine. We recommend you scan your system with reputable spyware remover programs to avoid problems.