My father's PC has 2 hard drives. One attached through the ribbon cable (C
drive) and other through the raid (red cable). He wants to add a third hard
drive to act as a drive to save/backup his data. The new drive is Hitachi
Deskstar which I beleive is IDE.

Can anyone please tell us how to attach this to the system, there is a place
for it in the CPU. Please explain every step to be taken as I have not done
such an excersise before.

Thanks