well i'm guessing you're looking for basically legitimate keyloggers, spyware, etc. for monitoring people's uses. well i don't have much experience in this, but the best thing to do is to probably get some software that can set passwords on options or software [some software has that included in allowing access to set up their options] (i also believe symantec has something like that called the password manager but i'm not exactly sure what that does).

general idea for setting up msn messenger
once you have put that software on the client computers you want to monitor, adjust the settings for msn messenger so that it records all of the chat history and saves them maybe in a network folder only you have access to, then lock out the option controls so that they can only be accessed with the password you set.

general idea for remote installation on clients
hmm i believe there is some free software out there that can do this if its connected in a network ( i think its illegal though and regarded as hacking software) and i dont recall its name, although i've seen it being put to use.

general idea for remote monitoring
probably the easiest thing to do is get a legitimate, good keylogger...i believe one was posted a while ago on antionline here: http://www.antionline.com/showthread...hreadid=272976

that one seems quite good in my opinion since it keeps such detailed logs on a lot of stuff, such as:

1. What was the Computer Named that Entered the Keystrokes?
2. What was the Domain Name of the Domain the computer was on?
3. What was the User name on the computer that entered the keys?
4. What date were those keystrokes entered?
5. What time were those keystrokes entered?
6. What application did the keystrokes come from?
7. What was the Window Title of where the Keystrokes came from?
8. What was the Windows Class of the program that handled the keys?
9. Can more than ONE copy be accidentally started?
10. What Hot-Key Can stop the program?
although adding in such a keylogger could involve conflicts with firewalls and antiviruses, so i advise you to select the ignore feature on their detection for this and lock out their settings with passwords (almost all security software has that option for accessing its settings)


well i hope this helps, a lot of stuff i've generalized a bit however and i'l see if i can find anymore information if i can.