I have a Windows Server 2008 DC and I wanted to use my internal time server on a linux box running ntpd.

After a little hunting around, I found the command required to set Windows up to use the correct time peer.

w32tm /config /update /manualpeerlist:"0.pool.ntp.org,0x8 1.pool.ntp.org,0x8" /syncfromflags:MANUAL

After making this change, you need to restart the Windows Time Service by issuing the following 2 commands,

net stop w32time
net start w32time

If you have problems, first make sure the Windows Time Service is enabled.

This works with Windows XP, Windows Vista, Windows Server 2003 and Windows Server 2008.

I wanted a Windows XP client which was not a member of the domain to have the same look and feel as the rest of the domain member clients. Part of creating this effect was to enable the Ctrl-Alt-Del to login prompt at startup.

In order to enable the Ctrl-Alt-Del prompt at startup in Windows XP you need to set or create the DWORD registry entry “DisableCAD” to 0.

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
DisableCAD = “0″

You can download this registry file to set this for you.
  Enable Ctrl-Alt-Del Login Prompt for WinXP (140 bytes, 979 hits)

See more information at Microsoft Technet.