3 simple steps
1) Go to com.l2jserver.gameserver.model.actor.instance.L2Pcinstance.java
2) Search for
public void increasePvpKills()
{
// Add karma to attacker and increase its PK counter
setPvpKills(getPvpKills() + 1);
3)after it,add this lines
PS: Dont forgot to edit the id and the count before compile ;)