I downloaded parallels in an attempt to try and play an old pc game of mine, Zoo Tycoon complete collection. However due to parallel freezing and only showing a black screen from then on I decided to delete it. I tried to run the game on an hour computer instead but the files on the zoo tycoon cd say I need parallels to run it now. if anyone could help me possibly understand why this happened or if I could somehow fix the cd I'd appreciate it thank you!