UNetbootin lets you to make bootable Live USB drives for a variety of Linux distributions such as Ubuntu, Fedora, Debian, openSUSE, etc from Windows or Linux operating system. You can use either downloaded Linux ISO file (CD image) or can be directly download a Linux operating system (if you have a broadband internet connection) from the app itself.
Download (3.9Mb) and run UNetbootin (no installation needed), then select a Linux ISO (CD image) file, floppy/hard disk image, or kernel and initrd files. If in doubt use the ISO file. If you're using an ISO file, that is all you required, just press "OK" to start installing. More information and download is available from ‘unetbootin.sourceforge.net’