i think i tried to download to many files and all of them were queued then when i tried to download something again then it said that was the limit to your queue..you must wait until those queues are gone...
how do "unqueue" them if i don't want any of them since i haven't download them yet because they were queued

I have no idea why you use mIRC - a CHAT client for downloading! Use a FTP client or your web browser!

you have to check with the person or bot you are downloading from for the correct answer to that question as it will mostly be different from person to person.

your question in and of itself is not a mirc question nor can it be easily answered.

however you might want to try
/msg botname help
or
/ctcp botname help

for details on how to do what you want.

Merlin .. What are you so paranoid about?
If mIRC wasn't designed for downloading as well as chat, why have fserve written into it?

/help /fserve