Windows XP Service Pack 3 (SP3) includes all previously released updates for the operating system. This update also includes a small number of new functionalities, which do not significantly change customers’ experience with the operating system.
This file is a CD image file for users who wish to create an update CD for Windows XP Service Pack 3, for example for offline installation by administrators.

[Download]
http://download.microsoft.com/download/e/e/9/ee9d0116-c9fe-4fc2-b59c-406cbfb6d515/xps