Please read /help fserve or you may start with this example code:
Code:
  
ON 1:TEXT:*!Trigger*:#YourChannel:{ 
  fserve $nick 3 c:\path\to\files c:\path\to\welcome.txt 
}

There are webpages about Fserves at here and also here.

DALnet: #HelpDesk, #mIRC, #MISHScript - Undernet: #mIRC, #mIRC-Scripts