Microsoft Office XP Service Pack 1 (SP-1) provides the latest updates to Office XP. Office XP SP-1 contains significant security enhancements, and also improvements in stability and performance. Some of the fixes that are included with Office XP SP-1 were released earlier as separate updates. This service pack combines the updates into one integrated package and includes a number of other changes that are designed to improve the reliability and performance of your Office XP programs. This version is the first release on CNET Download.com.