In tip 8453, I explained how to hide a user on the Windows XP Welcome screen.

If you want to force a Windows XP account to be displayed on the Welcome screen, run:

Welcome User_Name

Where User_Name is the NetBIOS account name, like Jerry. Welcome.bat contains:

@echo off
if \{%1\}==\{\} @echo Syntax: Welcome User_Name&goto :EOF
setlocal
set user=%1
@echo Reg ADD "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList" /V %User% /T REG_DWORD /F /D 1
Reg ADD "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList" /V %User% /T REG_DWORD /F /D 1
endlocal