I would say that if you are only going to play it a couple of weeks then just spend the 4 bucks and know your account will probably eventually go away. You can buy legit Diablo 2 keys (@ $4 for D2 w/ expansion) and go to and make an account.
You'll then be prompted to download the game that corresponds to the CD key. Go to Add New Game page after making an account, and enter the CD-keys. However if you want to play it longer than that, get a legit copy.
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