A little trouble

[Neobeard]

So i recently downloaded (yes illegally) starcraft broodwar, it was downloaded as an .rar file so i use winrar to unrar it and i proceed to install the game. I go ahead and try to play it it comes up with a message that says i need a CD to play the game... I know its possible to mount the game on an ISO or whatever i just have no clue how to None of the files included in the .rar file were ISO.. so i guess what im saying is HELPPPP!!!