This has been answered many times. Using search would get you a faster response...
on *:start:{
server irc.server1.net
server -m irc.server2.net
server -m irc.server3.net
}
And so on. /help /server for information on how to join channels or set different nicks using the same line as you use to connect. Or just do a search... You'll find the answers easily enough.