my western digital hard drive is clicking

My external WD 320GB hard drive isnt showing up on my mac, . Hello, my western digital 250GB drive pcb board is damage so i swap . If the drive is clicking and you can't access your data, your drive is pretty much
dead, and your data is gone. See more detail at http://my.western.digital.hard.drive.is.clicking.cheapharddrivesales.com