is not the item the probleme if you want try check the method you know to do:
step 1 : get original folder of game of lineage 2 (gracia part 2)
step 2 : use patcher to patch your systeme folder
step 3 : use l2endec to decode file ( l2encdec.exe -d armorgrp.dat )
step 4 : use l2disam (l2disasm.exe -d \dat_defs\armorgrp.ddf e- armogrpnew.ddf armorgrp.dat armorgrp.txt)
step 5 : modify your file and let and espace between text you add and other text.
step 6 : use l2asm (l2asm.exe -d armorgrpnew.ddf armorgrp.txt armoregrp.dat
step 7 : use l2encdec ( l2encdec.exe -h 111 armorgrp.dat)
is simply i understand how i do it but THAT NOT FUCKING WORK!!!!!! and im tired to try :S