I am looking to install the 64-bit version of windows 7. I tried yesterday when I upgraded to Parallels 6 and Parallels gave me the option to install the 32 or 64-bit version. I chose the 64-bit version and it seemed to install fine. I had some non-related issues and had to delete that virtual machine from my Mac. Today when I try to install it I am not given the choice at all. Is there a setting I am missing so that it asks you what version you would like to install? I just want to take advantage of a larger amount of RAM that I have. Thanks, Ken