I just bought a motoslvr L7c from verizon and I really like the sleek design of the phone and features. However, I can't seem to figure out how to hook it up with my powerbook so I can put songs on it. The phone manual says you can upload songs from you computer through WMP with a USB cable. I have a usb cable but it doesn't sync with my comptuer. Is there any program I can buy to make this work? or is this just another feature that Verizon has blocked?