Where is the Windows 2000 Service Pack?

Where is the Windows 2000 Service Pack? "With the release of Service Pack 2 for Windows XP, Microsoft has taken a significant step toward removing the security holes and insecure configurations that have made Windows such an easy target for malicious hackers and scammers—but only for 10 percent of Windows users.
For the 90 percent of Windows users who don't run Windows XP, there is no improved default configuration ridding the system of unnecessary services that are tempting targets for attackers. There is no greatly improved firewall protection. And, worst of all, there is no new version of Internet Explorer, one of the main causes of security problems in Windows (and there likely never will be)."