|"My system info is 1.5GHz speed and 256RAM. Does my PC specification matters?"|
Of course the specs matter! You have a weak CPU & not enough RAM. And you didn't even bother to list your video card. The video card is what "creates 3D" so if you have a weak video card or are using onboard video, chances are you won't be able to play very many games, except for *maybe* some older ones.