like ive seen it on many servers...it says "crjalbert has joined for the first time" "there has been [#] of significant players!"
This does both that stuff you are looking for http://forums.bukkit.org/threads/ad...e-on-first-join-1240.39532/page-2#post-741113 i can change it so that it works for you.
we'll its my plugin that i gave up on because it was useless, or so i fought, so if you want something changed i can do it for you.