I'm trying to add the LDAP attribute lastlogontimestamp to add to a user report.  I'm defining it as a large integer and my ldap name is 'lastLogonTimestamp'.  I have also tried 'last-logon-time-stamp'.  When I add it to a report (say inactive users report) all I get is a bunch of random numbers.  My result should be in a date\time format.  Any help would be greatly appreciated.  
Thanks.