It's userPrincipalName for Windows 2000 logon and samAccountName for pre-Windows 2000 logon.

You can find more info here: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/adschema/ad/win2k_c_organizationalperson.asp

Roman


>Dear Roman,
>Can you tell me how do I get the logon username through this method?
>Regards,
>Suvi Joseph