

The above is for people who want to deploy the new service pack in more than one computer or would like to have it soon. IMPORTANT NOTE: It’s recommended to get the Service Pack 2 for Vista using Windows Update.
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By providing these fixes integrated into a single service pack for both client and server, Microsoft provides a single high-quality update that minimizes deployment and testing complexity for customers. SP2 is an update to Windows Server 2008 and Windows Vista that incorporates improvements discovered through automated feedback, as well as updates that have been delivered since SP1. Please see the Windows Server SP2/Windows Vista SP2 page on TechNet/MSDN for additional details and documentation. SP2 simplifies administration by enabling IT administrators to deploy and support a single service pack for clients and servers. Service Pack 2 for Windows Server 2008 and Windows Vista (SP2) is an update to Windows Vista and Windows Server 2008 that supports new kinds of hardware and emerging hardware standards, and includes all updates delivered since SP1. Windows Server 2008 Service Pack 2 and Windows Vista Service Pack 2 – Five Language Standalone (KB948465) Install the prerequisite: Vista SP1 and KB955430 before plunging to SP2 of Vista.

You won’t see it offered to you if you don’t have Vista SP1 installed. Also Windows Server 2008 SP2 is available for download.
