Im going to show you how to replace items npc have with what you want them to sell.
Im going to use Losen Piettrei a weapon mechant in glitter to make a example
1. You must extract the data.saf file ( if you need to do this please take a look at the post to do it.)
2. You will need a Hex editor.
Ok lets start Go to ur NPCQuest.SData located in ur client in the folder NPC. Open it with a hex editor.
1. Find the Id of Losen Piettrie which is ( in game /nmake 1 35)
Ok so you take the id 1 35 you convert it to hexdecimal numbers
1 will be 01 in hex and 35 will be 23 in hex decimal so we got 01 23 for hex decimal.
Ok here is a example
Ok now lets say we want to replace the first item in this npc which is a Blade Ace.
So find the ID of Blade Ace
Blade Ace- ID= 9 21 Convert it to Hexdecimal= 09 15
Now that you have the Hexdecimal and you have have found Losen Piettrei Find the Hexdecimal 09 15
Here is a exsample
Ok now determine what item you want to put in it place
ill replace it with Heroic Nirvana
So i look for heroic Nirvana and get ID for it
Heroic Nirvana= Id= 9 62 Hexdecimal for it = 09 3E So go back to hex editor and where you found 09 15 change it to 09 3E and save.
You just have change that weapon the NPC is selling to something else.
Please remember you also have NpcQuest.Sdata in ur server files to you have to replace.
PLEASE NOTE **** Make back ups of all ur files just in case.