http://unetbootin.sourceforge.net/perhaps you're in a situation where you need a runty linux distribution on your usb flash drive
and want to automate the whole process ( including : downloading and installing the distribution ),
then this one is that what you're searching for. it can also convert almost any bootable ISO.

Requirements
* Microsoft Windows 2000-Vista, or Linux, or a USB Drive.
* A broadband internet connection to download the distribution packages (unless installing from pre-downloaded media, see below)
* Spare hard drive space to install the OS in (varies depending on distribution)