McAfee Main Window
This is a screen capture of the main window. In the top right below Security Status you will see the latest virus definitions [as of 8/8/2002]. By clicking the "help" button and selecting "about" you will find out the scan engine version you have.
The reason to keep these current, is because if you do a scan of your drive(s) and a virus is found, you can either delete or quarantine it immediately. If you don't, than you have to go on the Net and download the latest of each [definitions and engine].
Having the latest scan engine provides the best protection against the more advanced viruses, worms, and trojans. The more advanced and complicated the operating systems and viruses become, the more imperative it is that the virus software keeps up with the changes.