Motorola V600

ok i called motorola and they told me i could Dl the mp3 rings from my phone to the computer. well when i tried to do it with my v400 and the folder couldnt be open i reinstalled the progarm again and again and the same thing happens!! but when i hook up my v600 it reads my ringtones but not my mp3 ringtones 👿 am i doing somthing wrong??
all i wanna do is tranfer the mp3 rings tones from my v400 to my v600