I've just bought a multi PC license for Prevx Business, so I have Edge. I would like recommendations on whether I need a s/w firewall other than XP's inbuilt one, and if so what is user friendly? I've tried Comodo, but I couldn't possibly install that on a customer's PC as it would drive them crazy with all the continuous questions. Should I use ZoneAlarm free? Or what? Second question, should I add another AV product as well? I would prefer freeware as I have already paid for Prevx and don't want to have to pay for more to do the same. I am also looking for something that is not going to have a big performance impact. Is CLAMWIN any good? Or Avira Antivir? Please advise. Thnx. What do you guys use with Prevx