I am beginning to believe theog is an idiot on this board. I'm new here but I've check a number of his posts and he is advising folks to do crazy things...it seems on purpose. Like telling folks you can download either 32 or 64 bit. Most of you know by now that isn't going in happen. The download analyses your computer and will only upgrade your computer based on which you have...you will not have a choice. To change a computer from 32 bit to 64 bit you will have to purchase a physical disk, either 32 or 64 and do a clean install. That is assuming your cpu is 64 bit capable. Another thing you can do if you have already purchased the download is if you have the 64 bit version of your previous os then do a clean install with it then re-download your new purchase of Windows 8 Pro, let it analyse your computer and it will automatically install the upgraded 64 bit os. That is exactly what I did and all things went just fine. And theog, stop misleading folks...it's not nice. If this forum can ban this guy then they should.