heheh sorry...
after you add it to your remotes you either restart mIRC or type /bnc.start then it will ask you some questions, and you fill in the answers. I'll give you an example:

It's gonna ask you for a nick, ident, full name, server, server port, port to listen on, and a delay in trying to reconnect.

Bob is Steve@this.is.a.hostmask.com * Bill
Bob is the nick mBNC uses (obviously)
Steve is the ident mBNC uses
Bill is the full name mBNC uses

the server port is what mBNC uses to connect to the server (6667 for example)
the listening port is what you use to connect to it

It doesnt have multiple users yet, so if you arent planning on using it, then just setup the info for your friend and make sure the port is forwarded so he can connect then tell him to type /server
So if your ip is 1.2.3.4.5 and the port to listen on is 12345 the command would be
/server 1.2.3.4.5 12345

And that error you got.... i thought i added protection so that wouldnt show.. guess it doesnt work sometimes :< that just means that it tried to send the info (nick/ident/etc)
to the server, but the server had already closed, or it never opened...

Hope this helps! And sorry for no instructions :<

mBNC is a BNC i made in mIRC first version, so I'm sure there will be bugs... If you guys find any report them here, or at the site: http://mbnc.zzl.org/ (Just set it up today so like no ones there, would be nice to get a small community tho :D xP)

updated again... cant believe i forgot to delete the extra brackets xD
thanks to callow for noticing :p
(callow on efnet/freenode)

Updated, uses rawmode instead all the other ones, so even servers can trigger this.
btw i have a REALLY awesome alternative to this, but idk if i wanna release it :p
it connects to your computer on a desired port to an ircd (so far i've only tested on unreal) then connects to a real irc server then relays EVERYTHING it sees from the real server to your ircd except server msgs, pms, and private notices. so when you join a channel on your ircd its as if your actually there ^^ the only problem is unreal doesnt support +ps so any channel with +p it doesnt relay, the who set topic and what time isn't correct (too lazy to fix this one atm :p) same thing for +b/I/e the full name in the whoises on your server aren't correct (i would fix this so it gives the correct info, but that mean whoising everyone the joins after it links the channel, and on popular channels you could flood yourself off) of course, as we all know what is relayed on your ircd isn't space-preserved D: but $ % and #'s arent evaluated ^^
anyways im just blabbering on not like anyone cares anyways xD

^Neptune: i know, but most of it was copy and paste from others which were in that form...
Aucun50: thanks for the color comment :P
ES: i used to use it for someone who was banned for no reason and i got tired of copy and pasting =P

sorry it took so long to respond :S

this script does exactly what the title says, it mirrors a channel.