System Policies- Removal of folder optio

I’m trying to lock down Win98 workstations in an NT 4.0 network. I’m having problems with System policies not always doing what they are supposed to do. The “Start Menu” is giving me problems. Can’t seem to get Policies to Hide “Favorites” in “StartMenu & Hide “Documents” in “Start Menu” also Hide “Folder Options” from the “Settings”-
Hide “Active Desktop” in “Settings”-Hide “Windows Update” in “Settings”./ Everything else seems to work ok, these are the only settings that don’t seem to workcorrectly, they seem to leave all/some options? Thanks, Brian