mIRC is not for mass file trading, nor illegal file trading (and they kinda go hand in hand).
We do not help with
illegal file trading, as you can read
here.
Illegal file trades include mp3s, movies, software and even books.
Also note the dangers of file trading, from
this thread:
"When you accept files from someone you dont know, there's a risk they contain a trojan, virus, or malicious program that can cause a lot of harm. No matter how good/current your antivirus software is, its no quarantee. These things are created nonstop, spread fast, and it takes time for AVs to be updated. Downloading copywrited material such as music and movies also have the same risks, but in addition its against the AUP (acceptable use policy) of some networks and providers and is illegal. When caught you will be subject to lawsuits and huge fines."Happy
chatting 
Regards,