So a while back I purchased Windows 8 from Microsoft store, have the product key. But only the key, no media or DVD. Now I have a new iMac, have a large USB, but no external or USB DVD drive, because no one is using optical drives anymore. How the heck can I download Windows 8 from Microsoft from my machine running OSX? I didn't see any options for it when I logged into my MSFT account, only the ability to download a small .exe program, which I would then need a windows machine to run, which I don't have. Will that small .exe be enough to download and install while setting up Bootcamp? Or do I need the full image of Win 8? It's been awhile since I've used bootcamp, or any Microsoft Windows product. It's now confusing on how to do this using just a USB drive and a Mac. Also, really starting to hate Microsoft again, their instructions are atrocious, can't find anything on their stupid store.