Display Admin/Sysadmin account on the Windows XP Logon screen

[Thugilex]

To display the Administrator (master: Admin/Sysadmin) account on the Windows XP Welcome logon screen, fire up Regedit (or Regedt32) and go to:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserLis t

Create (if not present) a new value: right-click on an empty spot in the right hand pane.
Select New -> DWORD [REG_DWORD] Value -> name it Administrator -> click OK -> double-click on it again and check the Decimal box -> type 1, next click OK.

Modify (if present) the "Administrator" DWORD [REG_DWORD] Value:
Highlight it in the right hand pane -> select Modify -> check the Decimal box -> type 1 -> click OK.
Close the Registry Editor when done.
From now on, whenever you logon as Admin/Sysadmin, [ONLY IF you have administrator rights to the computer you're trying to boot into ] you'll see the Administrator account on the Welcome display.