Question : Set default language, country and time zone for all users via Windows XP registry

We have XP SP3 images we are using to deploy PCs with.  The original setup came from the US but we are based in the UK so the keyboard, language and timezone settings are incorrect.  Is there a single place in the registry we can update such that users logging into the machine will default to those?

Answer : Set default language, country and time zone for all users via Windows XP registry

Yes, of course you can do. I recommend to change the settings on one  machine for an arbitrary profile, export the reg entries, remove  unwanted changes, and modify them to apply to the .DEFAULT user.  Applying to existing users is more complicated if they are not cloned  ones (having the same user SID string as seen under the HKEY_USERS  hive).

 The related registry settings are in:
HKCU\Control Panel\International
HKCU\Control Panels\Keyboard Layout
HKLM\System\CurrentControlSet\Control\TimeZoneInformation.

 You can export them one by one, and then merge the results into a single  REG file.