Mass Effect 2 on multiple pcs?

[StarBound]

I'm wondering if it is possible to play mass effect 2 with all its dlc on multiple pcs?

My brother has ME2 and all its dlc including the dragon age blood armor (I gave him the code after seeing how it looked on ps3). I'm wondering is it possible to install all the dlc then use his account to log into the game and verify installation then continue or is it going to give mismatch errors or stuff like that?

[Sojourn]

You can do that, it is 100% possible, done it myself.
You just have to login with the account used to buy the dlc's... I used a friend's account.
Not legal I think, but yea...