My issue was similar. I wanted to copy photos and music from my PC to the sd card on the phone. I found that it could be done by connecting the phone to a USB port on my PC.
Thanks for taking the time to respond. It did not work for me. I tried it 2 ways. First to the sd card. Secondly to a new folder I created on the sd card. The file I tried to move was a jpg. Have you had success moving jpg files?