WD400EB HD slave not recoginized by windows XP

Is not the jumpers, if the drive is being recognize by the bios, you should be able to see the drive on the Disk management and you should be able to initialize the drive.

Click on the link below to get instructions on how to do that

http://wdc.custhelp.com/app/answers/detail/a_id/1018/session/L3RpbWUvMTM1MTUzNjI2Ny9zaWQvWjdSemZZOWw%3D