I have a miner with the tag SC_MINER_01. I'm trying to make him 
scream as he approaches, then kick off a conversation. 

I made a Male Commoner, editted my own OnSpawn script that 
uncommented the line with NW_FLAG_PERCEIVE_EVENT so I could 
use UserEvents on him. I then editted my own OnUserDefined script 
that contained the code:


void main()
{
    int nUser = GetUserDefinedEventNumber();
    if (nUser == 1002)
    {
        object oPC = GetLastPerceived();
        if (!GetIsPC(oPC) || GetLocalInt(oPC, "AlreadyTalked") != 0 || IsInConversation(OBJECT_SELF))
            return;
        SetLocalInt(oPC, "AlreadyTalked", 1);
        PlaySound("as_pl_screamm1");
        AssignCommand(OBJECT_SELF, ActionStartConversation(oPC));
    }
}