Lets get some facts straight.
First off, in the ORIGINAL OP he never mentioned he had an account. That leads some ladies and gents to jump to the conclusion of Private SERVERS From which is indeed piracy. Topple that with not buying the game (or some argue activation code) you get PIRACY.
Second off, even if there is a free download of the game, you still require an Activation code to play. From what we see, since he's trying to get it via FILE SHARING (from which is illegal in some anal retentive countries(Note mine HA HA!(well okay mine QQ))) it could be easily dtermined as illegal.
Thirdly, AFTER he edited in/posted that he already has an account THEN we were wrong about the piracy of the game itself. Now the only potential wrong that remains, is the actual file share. That depends from country to country.
NOW TO ANSWER THE OP's initial question.
Go winrar the file, copy it onto a DVD of 8 gb + and plug it into your computer.
Or hell just use Microsofts file sharing service for computer to computer on a closed network.
Herp Derp done. [sup] And you call your self a pirate! I'm ashamed of you X)[sup] I'm joking num nuts[/sup][/sup]