Vista - Only display the user name and password prompt at login

1. Open Control Panel and select System and Maintenance
2. Select Administrative Tools and double-click Local Security Policy (secpol.msc)
3. Expand Local Policies to Security Options
4. Enable Interactive logon: Do not display last user name
   
   This change should match the following DWORD registry setting:

   [HKEY_LOCAL_MACHINE \Software \Microsoft \Windows \CurrentVersion \Policies \System]
   DontDisplayLastUserName = 1