To hide all users of Windows XP operating system when the computer boots, you must use the Registry Editor. Today there are many programs that are using the files to create a backup copy of the registry, for example, Reg Organaizer. Using additional software can be justified because Not every program is distributed for free. Therefore it is better to use the built-in standard system utility Regedit.
Before you edit the registry, you only need to back up manually. Third-party software do it yourself. Run through the applet "Run" in the empty field where you must enter regedit, and click "OK". Also, the registry editor is started via the context menu of "My Computer."
In the main window, press the top menu "File" and select "Export". You will see a box to save the registry files. In the block "Export Range" Check the box opposite the item "All the registry", then select the directory, enter the file name and click "Save".
Now you can without fear of change registry settings. On the left are the registry branch, and on the right side - the parameters. In the left pane, open the registry branch HKEY_LOCAL_MASHINE, pressing the front of the title icon "+". Then successively open the following folder: Software, Microsoft, Windows NT, CurrentVersion, Winlogon, SpecialAccounts and Userlist.
In the right pane, right-click a blank area, click on "Create" and then selecting "Parameter DWORD». The title of the new value should be the name of the account, for example, Admin or the "Petrovich".
Double-click on the new parameter and enter the value "0" to hide the name of the account; "1" to display the account name on the Welcome screen. To call up a login and password for your account at startup you need to press the key combination Ctrl + Alt + Delete.