I havent seen anything that say you arent allowed to in any files or pages on the net, what i know the only thing he don't like is when you edit the mirc.exe it self, as i wrote befor it was a populare thing to hex out the version reply, even change the default icons inside mirc.exe, and that's not allowed.

if ($me != tired) { return } | else { echo -a Get a pot of coffee now $+($me,.) }