Monsters missing.
 

Back with another noob question, sorry... I appreciate all the other help you guys have done though :) Had my server running on a lan with 3 other people semi-flawlessly yesterday.
But back to the question.... why is it that alot of zones do not have monsters? Is it just they havent been added yet, or do I need to download something?

Its your database, the spawns for the zones that dont have them simply have not been collected yet.

So can I update my database to spawn them somehow?

Yes you can. You log into your server and go into an empty zone. You walk to where you want a mob to be and use #spawn to make a mob. Then you use other commands like #npcspawn create to add him to the DB. Then you do this several hundred more times to fill up the zone. And you can do #help to see all the commands and look at the tutorials for more details on how to spawn stuff.