Woohoo bro, its u

ok back on topic

About battlelog, i assume you already bought and link your BF3 cdkey to your Origin account(if not how come u could access the battlelog :\ )
the battlelog only work with a BF3 installed with EA Origin, dosent matter if the pc dont have legit serial number aslong the BattleLog could detect the game,
just login to battlelog
and jump in to the game
easy as that
btw, i just bought my own BF3 for rm60,
im soo addicted to battlefield P4Free but couldnt get enough of action, soo i bought the BF3 for pure Battlefield awesomeness..
(sadly my key is for RU version, owh dang.. need a english patch next >_>)