How to turn on ( turn off) automatic logon in Windows XP

The DTM Test is quite annoying that after you uninstalled the test, the XP still login as DTMLLUAdminUser automatically!!
Here I show you how to turn off the annoying DTMLLUAdminUser logon!!!

1.find:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\
CurrentVersion\Winlogon

2.change "AutoAdminLogon" from 1 to 0

How to cancel DTM test mode in Vista
3.Start--->All Programs--->Accessories--->Right Hit "Command Prompt"--->Run as administrator　Enter "Bcdedit -set testsigning OFF"