I seek your help, sugesstions and guidance for certain issues related with my network.

Network Detail

Let me first give brief info. about my network.

Server X 2

1: Main Server (Running ISA, Mail server, DHCP, DNS and SQL)
2: NAV server

O.S on main server is Windows 2003 and on 2nd is XP with SP2.

Clients X 75. 70 of them running on XP while 5 have Win98.

My questions are : -

MSN Monitoring

Few of our clients are allowed to use MSN messenger service but strictly they are ordered to use it for offical communication no personal usage is allowed. What i want to know is there a tool available that can monitor there conversation or can make log of them. I know there is bulitin feature but they know how to disable it so i wanted a better solution.

Another issue relating with MSN is that i also wanted to monitor are there any unauthorized users using MSN messenger.

Remote installation on Clients

Do you know any good tool via i could remotely able to install softwares in the clients. I can access them via remote desktop connection but it log off the current user.

Remote Monitoring

Lastly i wanted to monitor the clients activities, any suggestion for this.

Any other helpful tool that you people are using for managing networks, have to be free of cost