Hmm...you need the drivers for the phone. If I were you, I would go to your service's store (Verizon, Cingular, etc.) and buy the music package they have there. It comes with a CD, cable, and I think a memory card.
The V3m uses the same drivers as the V3c, I was hired to connect the v3m to a computer. YOU must install the motofix patch from moterola or else the phone will not function with the computer. Check this out YOU MUST GET THE PATCH!!!
Take a look at these instructions it tells you about the patch: