To enable or disable autoamtic account login in Windows XP:
1. Goto Start->Run.
2. Type "control userpasswords2" and press OK.
3. To disable automatic account login, check "User must enter a user name and password to user this computer." or uncheck it to enable automatic login.
4. Press OK.
Another way to disable automatic login:
1. Goto Start->Run.
2. Type "rundll32 netplwiz.dll,ClearAutoLogon" and press OK.
