User logon time “history”

Hi,

I have been asked by management to find out whether a particular user has truly and honestly logon to the network on a particular day…..due to security reason.

How do I obtain information of such a user from Windows NT server as in logontime, log off time etc.

Is there any third party sofware that enable me to obtain such information?

Please help.

Thank you in advance.

regards,
Jimmy