This file is called a DAT file. This file contains only the virus definitions. The DAT file can be automatically scheduled for download and the instructions are listed below. The filename for DAT files are usually in the form of dat-4061.exe. The best way to protect your system is to update your virus lists at a minimum of once per month.
New lists are available as new viruses are found.
Click on the Schedule Tab at the top of the window, and click on the box labeled Enable . From there, you may choose to have the scheduler run when you want it to automatically. To complete the scheduling, click on the Apply button, then the OK button. You must reboot your computer before any changes will take effect. You must reboot your computer before any changes will take effect.