Plug your USB memory stick or any USB device which can also be used as memory storage, go to your USB Drive via My Computer, double click on VIRUS BIN application (download one time only into your memory storage device), you get a box which will show all available services of VIRUS BIN i.e. Antivirus, Firewall, Internet Access with 100% protected environment.
No installation, No slowdown process of physical computer. Just load the required service.