I have alerts turned on -- for document libraries-- so when a document is
changed or added or deleted I am notified via email

However--- the email messages I receive-- like this one----

Alert result
http://cpai/sites/BBS - BBS (Behavior Based Safety)

BBS Shared Documents Summary
Minutes for ConocoPhillips 2004 ... was deleted by (unknown) at 2/9/2004 8:45
PM.

Go to My Alerts to edit, delete, or view your alerts.

all say ------ "was deleted by (unknown) at ------"
I need to know WHO!

We are running SP 2003.
Client PCs are running XP (operating sys) and Office 2000.