the problem is your disks, what you need to do, is if you have the recept if you just got it, take it back for an exact exchange, if not, install your friend's copy, run it, when in the opening menu, click options, look at the bottom of the pop up menu, it will have the version of the game, ex 1.0, 1.5, etc.
GET A NO-CD CRACk matching that version, there are a few at
www.gamecopyworld.com, that should fix it!!