Try Power Toy's Tweak UI from Microsoft:
[URL="http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx"]http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx[/URL]
Install, run and under Logon you will find check boxes to select the
accounts you want displayed and in the Autologon you can choose to
Enable/Disable it by Checking or un-checking the 'Logon automatically'
option.
TweakUI is a very useful tool and is relatively safe for most users as they
don't need to use the registry editor or other less obvious methods to make
changes to Windows.
More Detail on available features in Tweak UI:
[URL="http://www.winxpsolution.com/Tweakuixppro.aspx"]http://www.winxpsolution.com/Tweakuixppro.aspx[/URL]
>> Stay informed about: Administrator account -- How can you make it list for login