1) Turn off your PSU and unplug it from the computer
2) Connect the hard drive to an open slot in your case.
3) Connect the SATA cable to your motherboard than your hard drive.
4) Connect the SATA power connector to your hard drive.
5) Plug the PSU back in, turn it back on and boot your PC back.
After you install the drive, follow this thread to get the hard drive seen in MY COMPUTER... http://www.tomshardware.com/forum/265764-32-guide-installed-disk-system