NT has different control panels. NT machines can participate in a Work group or a Domain. Blue screen on death is a common NT error. If it doesn't happen too often it's generally fine to just reboot. NT allows multiple users and that it why we have them on our labs.
Administrative users have full control.
GAC users and roaming users have limited control. A user who is not an administrative user can save stuff only on the temp folder on the C drive. Because of limited access, non administrators cannot install software in the labs. NT stores your profile in a folder called .ntprofile folder. Every time you log in your user profile stored in this folder is loaded.