On the back of the Hard Drive you will see a power connector and a jumper. The jumper is to set the drive as a Master or a Slave. If you are running one Hard Drive you will want to set this as a Master. Simply take the jumper and set to the pins that note it as a master. Real simple just look at the back of drive.
Pins are in a vertical fashion.
Set jumper over pins and you are ready to slide that puppy in. This means Hard Drive and Floppy Drive. If you have a ATX minitower the hard drive will more than likely install on the bottom drive bay of the case. This is so on most modern towers. You will want to install the drive by sliding it in the bay with connectors facing the back of computer.