Registry Entries on Windows 2003 Server

Hi,

I am running Windows 2003 in the terminal server mode, I have it pretty well sorted but there is one issue that I can't resolve. When a user opens WORD or EXCEL and goes "file - open" then selects the drop down for "Look in", the "FTP Locations" entry is there. I want this to be hidden. I have checked the net and found that for XP a registry entry [HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\11.0\Common]
"RemoveFTPLocationsFromLookIn"=dword:00000001
This will hide the entry (or remove it from the list). This does work for Win2003 but only for the current user. I have tried putting this entry into the HKEY_LOCAL_MACHINE but it doesn't get picked up for some reason. I want the FTP Locations hidden from ALL usrs, any ideas?

Muzzargh