It is a new phone, HTC EVO 4G. I did it once; I transfered the pics from the phone to my computer. I selected the option of using my phone as a "disk drive", hooked up the USB cable, and a window opened up with options of how to view the files. But now I can't do it again. Everything is the same. But I hook up the USB cable, and the window doesn't pop up. I went to "computer" and clicked on drive E, and there is nothing there. I know the computer recognizes the phone because the "safely remove hardware" icon appears in the task bar as soon as I plug the phone into the USB. I am stumped. Thanks for your help.