Digital vs Retail versions Ok, I am getting very excited. What's the significant difference between buying the hardcopy DVD version versus online digital version? I presume price will be the same? I don't have fast speed internet so I am thinking I will wait for the retail version but will it contain all the files (or almost all) or I will still need to go online and do a lot of downloads? On the other hand, if I buy the digital version, how does it work? Do they email you a CD key after your purchase or they just activate your bnet account?