I have new locked down laptops with windows 7 hm edition and office 2007 loaded. While in the office - the machines will map network drives w/authentication and allow email to Outlook from Exchange 2003. Laptops do not authentice to the domain - only when mapping drives do they authenticate so GP is not an option and it is HM edition so local GP is also not an option. I want to use the registry to disable the Use Cached Exchange Mode button so the individual user cannot configure it. I want it so that if the laptop is not working locally - they will NOT be able to use oulook from the laptop and so no data will store on the laptop. If users are outside of the office they can access via Citrix or OWA.
How can I configure the registry of HKCU to turn off this option?