To automate the TimeZone setting in your Lite-Touch deployments, edit the CustomSettings.ini file and add the following line for Windows XP/2003:
or for Windows Vista/Server 2008/Windows 7/Server 2008 R2 use:
TimeZoneName=GMT Standard Time
Now to hide the pane during the Lite-Touch deployment wizard, enter:
If you are in another timezone you can get a list of the values here. Or you can use the Windows TimeZone Utility from the command line to interogate your current windows 7 machine. Simply open a command prompt and type:
Remember these settings can also be used as task sequence variables, if you are supporting multiple regions. For Windows XP read my article here.