How to run NES games on my PC ?
If you want to run other console games on your computer, you need an emulator. In emulator you just load file with game and you will be able to play.
So if you need help with it, then follow theese instructions:
1) Download an emulator ... for example FCEux - HERE
2) Extract to any folder you want and launch it
3) Goto "File > Open" and open your downloaded NES game
4) Enjoy the game! Buttons A and B = D + F