try something like..
on *:TEXT:*:#test:{
if ($nick isreg $chan) && (!$istok(%ex,$nick,32)) { .msg $nick $1- }
}
%ex = SomeNick AnotherNick AnotherPerson JesusLives AnotherNick2
What this does is sees if the nick is a regular user, and if they do not match any nick name in the %ex variable then it will message them.
(untested so I'm not for sure if this will work.)