I actually wrote a logon and logoff script that grabs the date, time, host name, user id, and whether they logged on or logged off and inserts that into a sql database. I put the scripts in the default domain policy so it affects everyone. I then created a couple crystal reports to make it all pretty and useful. The price was right and did what i needed.
RoadKi11
"This apparent fear reaction is typical, rather than try to solve technical problems technically, policy solutions are often chosen." - Fred Cohen