I don't think you'll find that's correct actually. If you read the SUS
deployment white paper, available at:
http://www.microsoft.com/windowsserversystem/sus/susdeployment.mspx
there is no such requirement. AD will help make the deployment of registry
settings through group policy easier, but is not necessary for SUS to work.
In fact the NT 4 system policy editor can deploy the registry settings.
There are other pre-requisites though:
- The server running SUS must be Win2K or Win2K3
- The clients must be Win2K or XP
- You must have some mechanism to write the registry keys on the client
machines to point them at the SUS server (i.e. AD GPO, NT4 system policy
editor, login script, manually...)
- You must be able to run IIS on the SUS server & the recommendation is for
a dedicated server
Hope this helps