l2 phx

hi elitepvpers...i need help with my packets at my phx v. 3.4.1.82

this is for buy Shilen Knife ^^
A7 41 9C 00 00 80 4F 12 00 01 00 00 00 00 00 00 00 00 00 00 00 .... so i dont know how change this for enchant?which numbers and how?who can help me :))
thank u guys and sorry for my english ;)

A7 41 9C 00 00 80 4F 12 00 01 00 00 00 00 00 00 00 00 00 00 00
change those to FF FF to get max enchant
it will look like this:
A7 41 9C 00 00 FF FF 12 00 01 00 00 00 00 00 00 00 00 00 00 00
if it works ur lucky ;)