If you're going to insist on using mIRC for illegal file sharing despite the advice given to you in the thread linked to above, then I might aswell let you know you'll find a lot of the illegal warez channels are set to +m so that no disturbances (such as flooding) can be made inbetween the XDCC bots spamming their messages to the channel on how to obtain the illegal files. Therefore, you may come across this error message a lot.
By the way, what you're doing is illegal, a good way to get infected with a virus, not what mIRC is for and generally frowned upon.
Regards,
