I use NOD 32 and am very happy. I also use Zone Alarm Pro for a fire wall. Recently I bought a Linksys WRT310N router, but still use Zone Alarm for the heck of it. I went to Upgrade to the latest version of ZA and now my installation is all jacked up.... Any way, my real question is do I even need to run a software fire wall? It is for my XP SP3 desktop and a Vista laptop. Is NOD32 sufficient to block incoming threats and leave the fire wall up to the router. Thanks for any input.