A newer review about how to create a bootable usb flash drive is available using True Image. This is a review of the process using an older version of the program. It is also used as an easy way to upgrade your hard drive. This is also very handy to use if you have a physical hard drive failure and need to restore the image to a new drive.
This media will allow you to boot from a CD or other bootable media to restore your computer from an image if it becomes so unstable that it will not boot. True Image comes with a handy feature to create a bootable CD in case of a total hard drive or operating system crash.