Unetbootin Or Linux Live USB Creator.
If you want to use it Live, not saving anything, Use Unetbootin. You can get it here http://unetbootin.sourceforge.net/
Or,
If you want to use it and save your changes, use Linux Live USB Creator. You can get it here http://www.linuxliveusb.com/
I'll be posting how to use each, soon. And after that I'll be posting how to make a Multi-Boot persistent mode, (which means it will save any changes I make to it.)
