If you had wanted to download every available Windows Update all at once to burn as an ISO file on a CD or DVD, then there is a tool for you. Offline Update is a program created by Heise Security that, once you run it, will prompt you to choose your specific Windows operating system (2000, XP, and Windows Server 2003 is supported) and language and automatically retrieve all updates for the OS since it’s first release. Once you burn it to a disc, you can pop it in after you do a fresh install or reinstall of Windows for yourself or for a friend’s PC.
Click here to download a zip file of the latest version of Offline Update, or go here for a list of past and current versions.
Download Every Available Windows Update All At Once