Shoutbox

You should try use the messenger api, it works, however there's a (very dodgy) work arround to this:

Say your command to do that is /xspecial_nick . Then when your plugin parses that command, it'll output /xspecial_nick2 (!NP) and then it parses xspecial_nick2 and you'll have the nick (and then you output the a /nick command to change the nick)