oh gosh, when ur in a hurry, not much goes right eh..
on *:START: {
set %o.nick $$?\"Input ur original nick\".
set %pwd $$?\"Input your password\".
}
and then, something like:

on :Disconnect:{
if ($me != %o.nick) {
ns ghost %o.nick %pwd
nick %o.nick
ns identify %pwd
}
else { return }
}
on :CONNECT:{
if ($me != %o.nick) {
ns ghost %o.nick %pwd
nick %o.nick
}
else { return }
}