welcome screen and user accounts problem

Hi,
1.I format hard disk, install Windows XP Professional and create 3 users with passwords. When computer is restarting there is NO welcome screen and the last user account is log on.(Eg.If User1 restarted computer, after rebooting it is directlly log in his account ) I want every time to use Welcome screen and users everytime to enter their username and passwords. In Control Panel -> User accaunts -> Chenge way of users log on and off are checked both options.


2. After described this auto log on, if user decide to Iog off Welcome screen is shown and real Administrator account is listed!

3. If I put password on Administrator account during restarting of system some message is appear (very short time - several seconds) and after that everithing is OK.

So I need help to activate Welcome screen and to hide from the list Administrator account (created during Windows setup).

Computers are conected with server.

Please for help!

p.s.
This post is about licenced Windows XP Profesional from 2002.