NT/95 Registry:  I can't read/write to the registry in my code when the NT/95 system is locked down or the user doesn't have admin rights

Bye the way.  The code is written in VC++ 5.0 and we are using the following APIs for accessing the system registry:

RegOpenKey
RegEnumVal
RegCloseKey
RegQueryValueEx
RegQueryInfoKey
RegSetValueEx
RegFlushKey

jhance is not entirely correct.  You can get around this, but you'll have to use impersonation.  It basically looks like this:

HANDLE hToken;
LogonUser( szUser, szDomain, szPassword, LOGON32_LOGON_BATCH,                  LOGON32_PROVIDER_DEFAULT, &hToken ););
ImpersonateLoggedOnUser( hToken );

// do stuff

CloseHandle( hToken );
RevertToSelf();

What this does is a) log on as a specific user.  You'll want to log in as a user with sufficient rights and then b) tells your current thread to "impersonate" the token of the logged in user.  The user logged in needs to have the SE_TCB_NAME privilege enabled.  This means, of course, you'll have to either prompt the user for an appropriate user account, or you'll have to store that somewhere so you can use it behind the scenes.

Supposedly there's a way to impersonate explorer (if I recall, its security context is the system account), and I think it involves getting Explorer's process token and impersonating that, but I haven't tried it.