This time, I'll recommend a useful 360 Security Guard v1.5 + Kaspersky 6.0 Antivirus Software.
First of all, it should be noted that Kaspersky 6.0 Antivirus Software only allows installation for XP users. After testing, if you install Kaspersky 6.0 Antivirus Software on WIN2000, your computer won't boot up and will eventually require reinstallation. Therefore, before installing Kaspersky 6.0 Antivirus Software, please make sure to check the compatibility carefully.
Note: If there are helper class plug-ins in IE, please delete them first or enter safe mode for installation!