It should be plug and play. does any USB device work? Do you see a erroe code? Anything looking funkey in the device manager?
I have been writing data to a 2T HD connected to the laptop's USB port without any recognition problems. No error msgs when attempting to connect the external 300G IDE HD, just lack of recognition. Tried all variations of connecting (rebooting hot/cold, attaching the USB cable with the HD powered up before/after, etc.) Nothing worked.
I've been backing up data from the desktop's HDs to an external 2T HD via my local network. I would prefer to backup the desktop's external 300G HD via usb because the network's 28 Mbps xfer rate is too slow.