Now is the time to learn. A hard drive usually requires +12v and +5v and two Ground pins. You will need to tap into the 5 and 12 volt lines coming from your power supply. The hard drive is from 2000 or thereabouts considering the game title so It will definitely be a molex 4-pin type PC connector for power. You could sacrifice an old HDD power connector and leads from an old PC power supply, then you can wire that up to your power supply.