ok i added the following:
Navicat (Weapons)
11100 Dragon Slayer*Dragon Slayer lrhand true 1520 1 1 wood s80 434 10 dual 8 0 0 0 0 325 0 114 -1 0 0 true true true true 0 -1 -1 -1
weapongrp.dat (413)
0 11100 1 1 6 1 0 LineageWeapons.dragon_slayer_m00_wp LineageWeapons.dragon_slayer_m00_wp LineageWeaponsTex.dragon_slayer_t00_wp LineageWeaponsTex.dragon_slayer_t00_wp icon.weapon_dual_sword_i00 icon.weapon_dragon_slayer_i00 icon.weapon_dragon_slayer_i00 -1 1520 8 1 0 0 14 3 2 LineageWeapons.dragon_slayer_m00_wp LineageWeapons.dragon_slayer_m00_wp 2 LineageWeaponsTex.dragon_slayer_t00_wp LineageWeaponsTex.dragon_slayer_t00_wp 4 ItemSound.public_sword_shing_8 ItemSound.sword_great_4 ItemSound.sword_mid_2 ItemSound.public_sword_shing_4 ItemSound.itemdrop_dualsword ItemSound.itemequip_dualsword 10 434 131 8 6 8 0 0 0 0 325 0 1 1 1000 0 -1 0 LineageEffect.c_u004 LineageEffect.c_u004 2.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 1.0000000 1.0000000 1.0000000 1.3000000 LineageWeapons.rangesample LineageWeapons.rangesample 1.4000000 0.6000000 0.6000000 1.5000000 0.8000000 0.8000000 12.0000000 0.0000000 0.0000000 11.5000000 0.0000000 0.0000000 4 4 -1 -1
itemname-e.dat (413)
11100 Dragon Slayer*Dragon Slayer a,When enchanted, the P.Atk. of a dualsword will increase more significantly than that of a one-handed or fist weapon. When enchanted by 4 or more, Atk. Spd. will increase by 8%. Inflicts additional damage to target during PvP.\0 -1 a, a, a, a, 0 0 0 a,
Everything is in chronological order, as that was the problem with this back in interlude.
As far as I can tell, everything is in the right place... I've restarted my sql+computer a hundred times, no luck.
Yet, I can add (etc) items and the artherias armor+wings just fine, and they work perfect.