Most security programs are so tied to the low-level operating system routines, that they're hard to remove, especially when not done properly, by using the vendor provided uninstallers. But even then, they leave so many things behind that installation of another product has to be done carefully.
For really first time installation - read this
FIRST TIME INSTALLATION ONLYhttp://forum.zonelabs.org/zonelabs/board/m...essage.id=53620
Please read the instructions here if you already have ZA installedhttp://forums.zonealarm.com/zonelabs/board...;message.id=154
That said, may I suggest you install one of the previous versions, for instance 6.5 because v7 free is really trouble, and the non-free products, at this point, in my opinion, still have some difficulties.
You can read about versions and download here:http://download.zonelabs.com/bin/free/info...aseHistory.html
I use ZASS v6.1. I think a better thing is ZA Pro with the best antivirus you can find, such as NOD32 (paid) or free AntiVir or AVG.