You can download SP3, copy it to disc or a portable drive and use it on multiple PCs. The advantage of this full download is that it can be used on any system - plus it doesn't require an Internet connection to install. The file will download directly from Microsoft’s servers – you may want to shorten the file name. Click here for the AMD Windows XP SP3 hotfix. This hotfix needs to be applied before SP3, otherwise your system may get stuck in a loop and never start. Do not install Service Pack 3 on systems with AMD chips unless a special hotfix has been applied first.

Important notes: Microsoft advise uninstalling any beta or Release Candidate versions before installing this final release. However, you must have installed either Windows SP1 or SP2 before SP3.* Keep in mind that new patches made available after Service Pack 3 was released (mid April 2008) will still need to be applied. The file is a large download and can be applied to any version of Windows XP Home, Professional, TabletPC or Media Center (32 bit only). Windows XP Service Pack 3 (XP SP3) fixes a range of bugs and adds new features to Windows XP.

Windows xp sp3 release date