When I got my Motorola D2 about 4 months ago I connected it to my PC via USB and downloaded pictures, mp3's, and some text files to the phone. I don't remember the exact procedure I used, but now I can't get the PC to even see the phone. When I plug in the USB cable I get a connected light on the phone and the battery gets charged, but the PC does not seem to see the phone. Any ideas what I'm doing wrong?