Download the freeware Virtual Clone Drive from the site below [URL=\"http://www.slysoft.com/en/download.html\"][COLOR=Blue]http://www.slysoft.com/en/download.html[/COLOR][/URL] Install the software. Note: You can uninstall Virtual Clone Drive using Add/Remove programs after creating your install flash drive. I chose to keep my Virtual Clone Drive installed, it's handy when you want to look at the files in a .iso. This will create a Virtual drive that you can use to mount your Win 7 64 bit install .iso. This will allow access to the files in the .iso as though you created and ran a DVD. To mount the .iso simply right click it and choose open with. You will see an option to open with Virtual Clone Drive. Choosing that option will mount your .iso Go to My Computer and note the drive letter Win 7 assigned to your Virtual drive. Now plug in your USB flash drive (at least 4GB) next open an elevated (admin) command prompt and type and enter [B] [COLOR=Red]diskpart[/COLOR][/B] This will start the diskpart program and open a new prompt in your command prompt window. type and enter [B] [COLOR=Red]list disk[/COLOR][/B] this will list all your drives including the USB drive you have plugged as well as their respective sizes in GB. Make note of the number associated with you USB drive. next type and enter [B][COLOR=Red]select disk x[/COLOR][/B] where x is the number of your drive as determined by the previous command. next run each of the following commands one at a time in the order given by typing and entering. [B][COLOR=Red]clean[/COLOR][/B] [B][COLOR=Red] create partition primary[/COLOR][/B] [B][COLOR=Red]select partition 1[/COLOR][/B] [B][COLOR=Red] active[/COLOR][/B] [B][COLOR=Red]format fs=fat32[/COLOR][/B] Format can be Fat32 or NTFS, your choice. [COLOR=Red] [B]assign[/B][/COLOR] [B][COLOR=Red] exit[/COLOR][/B] Don't close the Command window. The command to format will take awhile depending on you drive size as the format is a complete format and not a \"quick format\" After exit command open My Computer and make note of the drive letters for your Virtual Clone Drive drive and the drive letter that Windows assigned to your USB drive. Now run this final command [B][COLOR=Red] xcopy x:*.* /s/e/f y:[/COLOR][/B] Where x is your Virtual Clone Drive drive letter and y is your USB drive letter. Wait for the work to finish and voila you should have a bootable Win 7 USB drive installer. Decide where you want to install and create a suitably sized NTFS partition (20 GB or more) or if you decide to use the partition your present Win 7 or Vista is installed to format that partition to NTFS first. Plug in your drive start your computer and make sure to enter you BIOS and tell it to boot to your USB device. Boot to the flash drive and install from there.