Here is where the jumper is on the back part of your HD.
You should have it selected to "Master" (assuming you only have this HD hooked up to the IDE ribbon cable. If it's the second one down on the ribbon cable, It'll need to be on the "Slave" selection) selection. The jumper is usually green or black and you pull it out of it's slot and insert it into the correct slot that you want to select. I think you could even get away with the "Cable Select (CS)" option too, but it's been awhile since I installed an IDE HD.