i just got hold of a game for my pc "pro evo 5". i did not get it from a shop or anything if you know what i mean . anyway it came in a zip file. i unzipped and there was one file called "pro evolution soccer 5 pc". it has no file extension and says its just a "file" theres no icon for it either. is there anyway to open and use this file or is it a f****d up one?