(UPDATES 2013-07-07) There are problems when creating bootable USB drives and I’ve found a comparable utility that seems to be working better. Download the program from the following site:

http://download.cnet.com/Free-ISO-to-USB/3000-18511_4-75880271.html

There are circumstances when you may want to write an ISO image to a USB drive, bootable or not. This free utility called ‘ISO to USB’ could come in handy.

Program Information  

ISO to USB is a free and small software that can burn the ISO image file directly to USB drives; these USB drives include USB flash drives, memory sticks and other USB storage devices; it also supports to create a bootable USB disk with Windows operating systems……(click here for details)