^Torrent it from here
http://scyther.se/BFBC2_PC_ClosedBet...nt.zip.torrent it's a lot faster I was getting around 1mb/s when i donwloaded it. Its from nuclearfallout.net
And to answer the other question, you'd have to give them access to the whole steam account. I'm not sure how the EA account works too because your ingame profile is linked to that which could be linked to a cdkey?