sites i have in the link usualy give you 1 code but your fone is not in them 1s
i can give you a site that will generate 7 different codes (i dont know how many out of them will open your fone)

but you can only try 3 of them in your fone then you will have to get it unlocked by machine or computer if you fail to open it some fones allow 5
so you have about a 40% chance if you do it that way!

did you try and ask your/the network its locked to for the NAC UNLOCK CODE
tell them you are going on holiday for 2 weeks and you have a chip for that country and would like to use it