Very easy tool...
ISO to USB
Record iso images in usb pendrive
UNetbootin - Homepage and Downloads: "Introduction
UNetbootin allows you to create bootable Live USB drives for Ubuntu, Fedora, and other Linux distributions without burning a CD. It runs on both Windows and Linux. You can either let UNetbootin download one of the many distributions supported out-of-the-box for you, or supply your own Linux .iso file if you've already downloaded one or your preferred distribution isn't on the list.
* Microsoft Windows 2000/XP/Vista/7, or Linux.
* Internet access for downloading a distribution to install, or a pre-downloaded ISO file
UNetbootin can create a bootable Live USB drive, or it can make a 'frugal install' on your local hard disk if you don't have a USB drive. It loads distributions either by downloading a ISO (CD image) files for you, or by using an ISO file you've already downloaded.
Another cool tool, that worked better