its pretty simple..
unplug power cable.
remove side panel of case.
put hdd in 3.5 drive bay... secure with screws..
configure jumper settings to SLAVE on the HDD , note it should show on the actual hdd or the documentation how to do this..
plug ide cable into hdd.. note there should be a small notch in the center of the cable telling you which side goes up... plug in a power cable..
put side panel on, plug power in... turn on.