Ok this is how it works.
Your itemtype file contains every item you can pick up in Conquer. If you edit files names in the itemtype then you can set Ref, Uni, Elite, Fixed and super item names in which conquer will show you the names on the ground.
Their is a tutorial on making your own itemtype file but i cant be stuffed searching.
When you pick up an item, packets are sent to the server to tell the server to delete the item off the ground and put it into your inventory. It is then...RANDOM...as the server will send back packets to your client to tell the client to display "+1". Packets are then sent back to tell the server that your client has verified that the item is either +1 or not +ed at all which Authenticates the server to allow you to keep the item.
Eg. It will not authenticate if you send back a packet which says you have a +1 when the server has send you "non +ed" packet. Thus, you cannot edit packets to say you have picked up a super 2sdg +12 poison 150ench 130 Blade, when you have actually picked up a normal lvl 5 blade.
Everything is checked server sided now, so if you want awesome items...Hack the server and good luck.
Hiyoal :)