IDE cable are available at 36" (3 feet). Close, but I guess not close enough for your install. Take a look at this: HERE
This is an IDE to USB2.0 adapter. It also comes with the 2.5" (laptop/slim drive) to 3.5" adapter. The power adapter can easily be modified for run off the computer's power (+5 & +12VDC). This is really the power needed for the drive.