Microsoft announced extended support for Windows 2000 and Windows XP S2 will end on July 13. Paid support and security updates will be discontinued beyond this date, but self-help online support will be available for at least a year longer. Windows 2000 users will need to migrate to a newer version of Windows, while Windows XP SP2 users can simply upgrade to SP3 or migrate to Windows 7.
According to Microsoft, self-help online support (such as Microsoft online Knowledge Base articles, FAQs, troubleshooting tools, and other resources) will be available for at least a year longer. But paid support, support assistance, and security updates will be discontinued on July 13.
If you're using Windows 2000, you'll need to migrate to a more recent version of Windows -- or live with the lack of support from Microsoft. Microsoft has a Windows 2000 End-of-Support Center with advice on migrating to Windows 7 (for desktops) or Windows Server 2003, 2008, or 2008 R2 (for servers).