hack the automatic update in wes2009

Look for these two keys and change them to 0, from 1
NoWindowsUpdate
DisableWindowsUpdateAccess


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The article "Configure Clients in a Non–Active Directory Environment" explains WSUS registry entries:
http://technet.microsoft.com/en-us/library/cc720464(WS.10).aspx

You can try to import the following registry entries:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate]
"WUServer"="http://WSUSTest.com:80"
"WUStatusServer"="http://WSUSTest:80"

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU]
"UseWUServer"=dword:00000001