What will be a better one firewall I can download and use for free, that will come with my windows xp and won't slow it down?

What in the world does that have to do with this thread? If you want firewall help, please post in the PC section. Zone Alarm is a solid free firewall, but it is widely targeted by malware because so many people use it. The Windows XP firewall isn't that bad, if it isn't causing you problems, no real reason to change it. A lot of firewalls are packaged as pay apps.

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