on *:START:{
server stratics.frws.com 6668 -j #chan1,#chan2 ,chan2pwd
server -m irc.ncdot.co.uk +6667 passwd
}
Notice the comma. Since channel #chan1 does not have a password you use the comma to make the script send the password for the second channel.
Example:
#chan1 - no password
#chan2 - hunter2
#chan3 - no password
#chan4 - foobar
/join #chan1,#chan2,#chan3,#chan4 ,hunter2,,foobar