MSN Sniffer 2.0 is an excellent utility to control and monitor MSN use on an office or business LAN. It lets you capture and save all MSN messages that are sent via that LAN.
Apart from monitoring it has the great utility that if anything important has been said or sent, a backup copy of the conversation is saved and stored, so you can go back to it later and see what was said and done.
Without doubt another way to get more out of your MSN.