Don't forget also the other bug... It makes impossible to change the speech language (I'm spanish). argv0, in a few hours I will post that command (I am not at home now)
mIRC uses Windows 7's built-in text to speech system, so if you want other languages you will need to add additional voices to it. I don't know anything about where to get good quality voices, but you can find the settings I'm talking about by searching for 'text to speech' in control panel.
