According to me !!!! Virtual PC 7 seems old. Try VM Ware Fusion. It should fix all the CD hooking issues and so on. Microsoft have dropped the future development for its Virtual PC for Mac line. If, I remember correctly, Virtual PC supports up to Power PC G4 only. From G5 onward to Core 2,You have to try VM ware Fusion.Virtual PC 7 isn't compatible with Leopard 10.5. If, Installed it will end up with Network and Optical media capture option grayed out Only intel based mac allow You to play Windows games. Since,You own a G5 based only option is to stick with games that is ported / written for that architecture.