Re: DRIVER NEEDED: Imation apollo 2.5" portable HDD 250 Gb (Windows Vista) [USB]
No driver is required as this is a plug and play device when used in Windows Vista OS. Your term Driver is AM7RUKV3 IDE controller is a pretty confusing sentence. First AM7RUKVS might be a driver but it's certainly not a driver name. AM7RUKV3.sys or AM7RUKV3.dll or AM7RUKV3.exe would be a driver name. While the drive itself may have an IDE interface, the actual interface would be USB. Often called IDE to USB interface.
Make sure the USB ports are working properly in Device Manager and to verify operation, you might try uninstalling/deleting the usb ports in device manager and reboot. That will allow the system to re-detect and re-install the USB drivers.
Also make sure you have the drive connected directly to a usb port and not thru a hub. And be sure the inter-connecting cable is as short as possible, ie: not over 2 ft. in length.
Did you partition and format the drive or was that already done to the drive when you got it?