Downloadable Service Packs for Windows 7 / Vista / XP

If you would prefer to download a service pack for offline updating, this is a direct link which will allow you to apply service packs without using Microsoft Automatic Updates. Save your bandwidth and always have the latest service pack with you, burn them to Cd or keep them on a USB stick handy at all times.

http://windows.microsoft.com/en-US/windows/downloads/service-packs