These updates contain all the fixes and enhancements which have been made available in the previous year. The updates (called Service Packs) provide convenient, all-in-one access to the most up-to-date drivers, tools, security updates, patches, and customer-requested product changes.

The latest Service Pack for Windows XP—Service Pack 2 (SP2)—is all about security, and it’s one of the most important service packs ever released. It provides better protection against viruses, hackers, and worms, and includes Windows Firewall, Pop-up Blocker for Internet Explorer, and the new Windows Security Center.

Windows Update: http://windowsupdate.microsoft.com/

Order a CD: http://www.microsoft.com/windowsxp/downloads/updates/sp2/cdorder/en_us/default.mspx

Windows XP Service Pack 2: http://www.microsoft.com/windowsxp/sp2/default.mspx