Okay, files what you need edit to put items in npcs...
Share/Creature/NPC.csv (here you need to put in JobType the code 1 = Shops, 2 = Teleports and 3 = Stash, so if you want to put a shop fill the column JobType with code 1)
Share/Item/Shopset.csv and Shop.csv
The other process are here
For wings in pablos you need to know the right coord x and y to put your items in the shop, if you put it wrong the server crashes. coordX = Lines and coordY = Columns or vice-versa... starting with 0