Hi,
on Windows XP/2003 (sorry I don't have any older version of Windows):
1. Start
2. Settings
3. Control Panel
4. Administrative tools
5. Computer Management
Computer Management window opens:
6. System tools
7. Local Users and Groups
8. right click on Users folder and New user.
Follow the wizard.
It should be similar in win2000, but I am sure in NT is different, but I can't remember how. I haven't been using NT for ages...
Hope this helps,
Grofaty