I'm still trying to get this 3rd edition rule thing for NWN...so here's some more questions that I was hoping that I would learn on my own...:
1) When you're a rogue, what does flag trap do?
2) About armors, what does the DEX bonus do?
3) Well, weapon type does different type of damage like piercing, slashing, and buldgeon(sp)...I know buldgeon is used for skeletal monster and slashing and peircing is used on flesh, but which is more effective on flesh, peircing or slashing?
4) How do you make your henchmen disarm traps?

I might have more questions if I encounter anything I don't know yet...which I hope I won't.

Thanx if you can help out.

1. supposed to leave the trap red so you'll know not to step on it if you can't disarm it.

2. Attribute bonuses are based on every 2 points above an attribute of 10. Skills are based on points and attribute bonuses (and racial/class bonuses). Several skills rely on dex. as an attribute. AC can also be increased via dex. attribute bonuses (i.e. a 16 in dex. will give you an AC bonus of +3). Depending on the type of armor your wearing your dex. AC bonus will be limited. Wear no armor and you'll have no limitation on your bonus (i.e. a dex. of 20 will net an AC bonus of +5) - HOWEVER if your wearing armor then their will be penalties, the heavier it is the greater the penalty. I believe full plate only allows a dex. AC bonus of +1 so even if you had a dex. of 16 (which would ordinarily confer a +3 AC bonus) you will only be able to have a +1 AC from your dex. bonus. These bonus are eliminated if your caught "flat-footed" - essentially meaning if your knocked down.

3. Physical damage type is only there for referencing opponents that are resistant or immune to physical types of damage. Usually though your opponents will not be immune at all to a particular type of damage (i.e. you can use a piercing weapon or a slashing weapon on a skeletal monster with the same damage as a bludgening weapon). More commonly you will find that some opponents are resistant or immune to other types of damage: elemental, magical, negative energy, divine energy (i.e. undead will actually be healed by attacks with negative energy).

4. Left click on the henchmen and talk to them - go through each menue listing until you see what your looking for - of course the NPC will have to have the ability your looking for, (in this instance Tomi). Unfortunetly though your ability to detect traps is still based on your character's ability - not the NPC's, so you'll first have to "discover" the trap (spot skill) before the NPC will disarm it. You'll also have to move out of the way for the NPC to do its job.

What ScottG said.

On the flag trap command; it's only useful online where a scouting rogue can flag a trap he can't disarm so that his party know where it is and don't get any unpleasant surprises.