First I would like to say that you will be using Command Console in this guide. So try to use the Offzip & Packzip UI first if your not comfortable with the Command Console, and if you have problems then use this guide.
Second if you want something else added, or you see a mistake please feel free to tell me via a reply, or pm.
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Offzip And Packzip w/ Bat File
Offzip & Packzip.rar