Will ZoneAlarm work with Windows XP SP2?

Q: I already have the ZoneAlarm Pro firewall. Is it better to use the SP2 firewall and turn off ZoneAlarm or the other way around?

A: Use them both. The Windows XP SP2 firewall blocks only incoming traffic; it does nothing against spyware or Trojan horses that will try to broadcast your Web surfing habits or credit card information out to the Internet. A good third-party firewall such as ZoneAlarm will stop malicious traffic that's both inbound and outbound.