Shoutbox

You learn to script by either reading the Scripting documentation and usually by having some passing knowledge of computer programming.

You won't get the kind of support that you'd need to develop such a program from anyone here, as it is using Messenger Plus! Live for serious invasions of other people's privacy.

If you think your friends are doing "wrong things" on your computer, then don't let them use it.  Either trust them enough to use your computer without doing things wrong, or don't let them use the computer.