Hide user from logon screen

To hide a user from welcome screen, all you have to do is create an entry on the list for the user you want to hide.Follow the following steps.
1. Click on start and select run, then type regedit in the box.
2. This will start up the system registry editor.
Now follow this path HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\Current Version\Winlogon\Special Accounts\Userlist
3. Now right click on right side and select a new DWORD value name it as the name of user account which you want to hide.
that's it you are done.
To access that account just press ctrl+alt+del twice and type that username and password.
If you ever change your mind and want the account to be displayed on the welcome screen again, just delete the entry that you made in the list in system registry and everything will be back the way it was.