Hi, I just bought a windows dvd game of Toca 3, and my iMac superdrive won't load it. The drive will try and spin up, make a groaning noise a couple of times, then eject the disk. I have tried the same disk in a friends MacBook Pro, and 2 friends PCs and there drives read the disk perfectly. I have tried the disk in both windows and mac, and neither will read the disk. I have also tried cleaning the disk. My iMac is a 2.4ghz Aluminium 20incher... any help would be much appreciated, as i am currently having to use my friends MacBook Pro (unibody) to play the game and he is getting a little anoyed!!