I have windows os 64bit, I have a canon 20D and cant figure this out, I had problems getting my usb card reader to show up once I had inserted it, I just started using the cable usb from camera to usb, I had settings to start an automatic download of images once device was found, now, I dont have a message that device is found, and the driver from canon was not avail. and/or unable to install, and also the previous things Ive read were saying downloading a driver may not be required? Ive always plugged in and seen my camera, what could have happened and how can I fix this ?