UNetbootin is free software to create bootable Live USB drives for Ubuntu, Fedora, and other Linux distributions without burning a CD. It runs on Windows, Linux, and Mac OS X.
Main features:
create a bootable Live USB drive.
frugal install.
built-in support for automatically downloading the distro.
USB drives are bootable only on PCs.
load pre-downloaded ISO file
Requirements:
Microsoft Windows 2000/XP/Vista/7, or Linux, or Mac OS X 10.5+.
Download UNetbootin