first thing that sprung to my mind is to change that jumper to CS, just in case, ive had drives beofre where one is on Master and one is on Slave, didnt work at all, even if i swapped there cabl positions, changed them to CS and it worked a treat... so yeh, try that and see what happens, if that doesnt work, then...:
> what other stuff you you have plugged in via USB
> does that USB port actually work
> have you tried the drive in another computer
> does the drive spin up
> do you hear any crackling or scratching/clicking noises from the drive.
dragon