I am running Vista home premium Zonealarm have other be my preferred firewall but its cause BSDs after installation of its compatible version.
Answers:
Vista have a pretty solid firewall as anti XP's. that's what i use but
PC Tools Free Firewall works great too:
http://www.google.com/url?sa=t&ct=res&cd...
Norton works for me. The preinstalled Norton expired after 2 months and I replaced it beside Norton Internet Security 2008 and it works fine. It also have a highly nice built contained by password utility if you comfort to use it.
Zone Alarm is FREE and outstandingly rate.
F-secure internet secuirty 2008 is devout and support vista,BitDefender is nice too and fundamentally powerful,I hold tried it near my window vista and it's totally fine...but pilfer some system resources...if this doesn't issue for you use it.