You will need special software to play Blu-ray discs besides the Blu-ray drive. There are 3 commercial programs that support Blu-ray. They are PowerDVD Ultra, WinDVDPro and Total Media Theater (TMT). The latest versions are PowerDVD Ultra 12, WinDVDPro 11 and TMT5. There are freeware solutions but they take some knowledge to setup. Given the fact that you don't even know what a Sata cable is, I'd refuse the package. That being said TMT5 does have a demo available.
But there's a lot more needed in terms of hardware and background knowledge to play Blu-ray than just the software package and Blu-ray drive. For example, is your monitor/ TV and video card HDCP compliant? HDCP is a way to protect a Blu-ray from being copied. If not you will have to buy another program like AnyDVDHD to get around it. Then there are the compatibility problems caused by the Hollywood studios Digital Rights Management (DRM) another way to prevent you from copying the Blu-ray. Really, using Blu-rays on a computer is a royal pain. You'd be much better off with a standalone player.