I am trying to edit the default user NTUser.dat so that all new users will inherit the setting I am adding. I need someone to explain to me how the hives work and how I load the default user hive for editing. I have a working program that will write to the HKEY_USER.Default part of the registry, but it writes to my profile's NTUser.dat file instead of the Default User's NTUser.dat. Any help or suggestions would be greatly appreciated.