And Foley's computer and AOL's server logs as well. It's not impossible for there to be transcripts of IMs. Actually, it's not real hard. And, If Foley did this from behind the firewall at the Capitol Building, or on any other Govt network, it becomes childs play to pull the history on him.
See #221...it's an old Memogate story I found about supposed computer hacking by staffers in 2003. Would it be possible to get them in that manner?