Hi, i have just purchased the av700 40gb and im having problems connecting it to my pc. I managed to connect it and transfer some mp3 songs, But now when i connect it via the usb nothing happens at all. I have connected it exactly as the manual says but the av700 isnt showing up on my pc anywhere, any help would be greatly appreciated.

Have you tried a different USB port. I spent 2 hours trying to get mine to connect to my PC. It kept connecting as an incorrectly functioning USB device. I switched to a different USB port eventually & it worked perfectly.