In US its been released and you can buy it via Impulse and digital download whenever you want (today) and play the retail version. However I think Europe is meant to be getting the game on the 22nd?

i believe that you can download on one computer, archive it, then transfer to another computer and use impulse to install it from the archive.

i think the trick is to select download and archive, as opposed to archiving after it's installed as it doesn't have all the files needed for different OS's (XP, Vista, etc)

search the impulse forums for exact instructions.

this route may be preferable as you're buying in dollars, which maybe cheaper than the european retail price.

my 2p of educated guess work.