SUS 1.0 with SP1 is designed to simplify the process of keeping your Windows-based computer up to date with the latest critical updates. SUS 1.0 with SP1 enables administrators to quickly and reliably deploy critical updates to their Windows 2000-based servers as well as to desktop computers running Windows 2000 Professional or Windows XP Professional.
SUS 1.0 with SP1 requires your client computers to be running the latest version of Windows Automatic Updating. You can download Windows Automatic Updating here.
The updated administrative template file allowing for adaption of the SUS SP1 client functionality to meet your needs is available here.
Prior to installing SUS 1.0 with SP1 on a server in your organization, Microsoft recommends that you read the Software Update Services Deployment White Paper.