I downloaded and installed both of these on my computer. ZoneAlarm added a toolbar that I did not want so I had to uninstall that. Avast-Free Anti virus has a "compatible setup" option that lets you install it as a backup to your own virus protection software, so I chose that option and installed it. Once both these were installed and I rebooted the computer, my Anti-virus program that I was already using would no longer update. After playing with settings on both the new protection programs I was unable to find any setting configuration that would allow my anti virus program to update. By carefully unistalling the programs again one at a time, I determined that it was the ZoneAlarm program that was the culprit, so I left it off and reinstalled the Avast-Free Anti virus. While I have been told many times that most antivirus programs will not operate correctly when there are two of them trying to operate at the same time on the same computer, this setup appears to be working well right now. I'm not sure what I missed out on with the Zone Alarm program.
Todd Thelin Spanaway, WA In a message dated 4/30/2012 5:55:43 P.M. Pacific Daylight Time, markweg...@charter.net writes: No one should ever have " unprotected Internet". I recommend "ZoneAlarm" and "Avast-Free Antivirus" . They are both free downloads for "non-commercial" users. (home computers). I've been running them for years with no problems. It flagged the SCAM e-mail as soon as I tried to open it and said " you really don't want to do that", "it has a virus". Do yourself and the rest of us a favor and get protection............... Larry