um, idk if this might help. but just thinking about it, like in the rare ore's boxes, would it be possible to, instead of generating the items from a list, you edit the list to give you the item you want? tedious, but, idk. coz he said spawning, not replacing. :P and the only time/command/IG thingy i see where an item gets "spawned" is in the lucky boxes etc etc. :P
or maybe that's client side? well even so, if you could filter the incoming packets for the item you will receive, maybe that's how you can get the item you want.
idk, might be a stupid idea. anyone's welcome to flame me, im just a noober spectator here. :) I do enjoy, however, reading about everyone's posts. I just try not to do the hacks since I might lose interest in the game. :D
I got this idea coz i see in other private servers, the GMs and Admin could manipulate the outcomes of the lucky boxes etc. but, yea, maybe it is client-side. >.<