trace user logons

From: John (organic_john_at_yahoo.com)
Date: 10/16/03 

Date: Thu, 16 Oct 2003 15:33:55 +0100

thanks in advance for any assistance:

I'm trying to find out when someone has logged onto our network, i presumed
it would have shown under the even viewer and security log of the Domain
Controller, but it is empty.

Is this the correct place to view such info as successful logons or
unseccuessful logons? If so, any suggestions as to why they are not showing.

If this is not the correct place to view this data, where should i be
looking.

regards
john