Pre-ordering crysis 2?

crysis 2 is available on ea website costing just Rs 1000(in india) or 20 $ which is quite cheap...i've got the credit card and i've got the money....just wanted to know what is a direct download? Will i be able to play the multiplayer after downloading the game on 22nd march? and how will i install the download(is there an iso file?) another question:my download speed is about 120Kb/s, and i guess the internet speed is about 256 or 512 Kb/s....will multiplayer run just fine with my connection?