Question about Events and NPC's

[SavageDeath]

Okay so I have no idea if this is the proper place to post this for the second part of my question but here goes.

First question is, is there some type of sub EVENT for when someone equips any piece of armor? I looked on the QuestTutorial and I checked on the Google Code and I can't find anything about it. The reason I ask is I am looking for a EVENT that will allow me to check what that piece of armor is they equipped and then send them a client message or well anything.

Second question is, anytime I put a NPC's HP's to anything over 2,147,483,647 the NPC's HP's will go negative. I thought this was something to do with the way the source calculated the hp but I ain't too great with c++ so I wouldn't know where to look or even how to fix this problem. Thus my question, is it possible to make it so I can set an NPC's HP's to over 2,147,483,647 without it going negative?

Any help would be greatly appreciated =) Thanks in advance.