Put the CD into your computer's optical drive and plug the flash drive into a USB port on your computer. Open the Command Prompt (found under "Accessories" in the Start menu). Type "diskpart" at the command prompt and press the "Enter" key. Type "list disk" and press "Enter." Find and note the number next to your flash drive in the list that appears. If you're not sure which entry represents your flash drive, try looking at the disk capacity part of the list for a hint. Type "select disk 1", substituting the number by your flash drive for "1". Type the following commands one at a time and press "Enter" after each command: "clean", "create partition primary", "select partition 1", "active", "format fs=fat32", "assign" and "exit". Type "xcopy d:. /s/e/f g:", with the drive letter of your CD drive instead of "d" and the drive letter of your flash drive instead of "g". Press "Enter." When the files have copied, your flash drive is bootable.