best/easiest application i've found is startup disc creator in your menu on mint 14. If the usb is plugged in the program will show it listed in the bottom half of the dialogue box on screen, (ignore the top part about iso's) just click on erase disc, say yes to are you sure and enter your pass if this is required, the usb should be done in seconds.
There's other ways and app's in package manager/software centre but this is just my favourite
Lenovo ThinkPad T61 LM14 & 15 (different HDDs) Intel T7500/2.2GHz/Cinammon 1.6/1.8 Intel GM965. Toshiba Satellite M70: Dual boot Zorin OS & Elementary.Desktop:LM13/15 Geforce 9500 GT, Athlon 7750 Dual-Core 2700mhz,3gb RAM.Linux Registered #562462