My Windows XP just did automatic update for Malicious Software Removal. After reboot, I'm unable to go to internet. My home network still works and is able to use remote acceess to my other computer and network drives but it just won't let me get on the internet. I've already did clean uninstall and reinstall but still does same thing. For some reason however, ping works. I can ping to my router, my ISP's DNS, and other sites like www.yahoo.com and www.google.com. If I shut down Zonealarm, everything's normal where I can surf internet and Trillian can connect to servers. What could be the problem?

Operating System:Windows XP Pro
Software Version:7.0
Product Name:ZoneAlarm Internet Security Suite