I was having Microsoft windows 7 operating system installed on my Dell Inspiron 6400. From last few days I was few up of playing counterstrike games so I downloaded some new games. The games that were downloaded were in the .nrg file format. I wanted to play the newly downloaded games and I am unaware of the steps to open this unknown file format. I need a solution describing if there is some readymade software available through which I can open .nrg files.