Something like this should work just fine:
Code:
on *:start: {
  server irc.siglost.com -i nick1 -j #chan1,#chan2,#chan3,...
  server -m irc.shakeababy.net -i nick2 -j #chan1,#chan2,#chan3,...
}
on *:connect: {
  nickidentify $me
}
alias nickidentify {
  if ($1 == nick1) { nickserv identify nick1PASSWD }
  elseif ($1 == nick2) { nickserv identify nick2PASSWD }
}


Note, use: /help /server to get the details on the -i and -j switches.