G5 processor requires Mac OS X Version 10.3 or 10.4.1 to run Virtual PC for Mac. Operating system: Mac OS X Version 10.2.8 Mac OS X Version 10.3 Mac OS X Version 10.4.1. Processor: 700 MHz native PowerPC G3, G4, or G5 processor In addition, your computer must meet the following minimum requirements: Before you can install Virtual PC for Mac Version 7.0.2, one or more of the following programs must be installed on your computer: Virtual PC for Mac Version 7.0 or 7.0.1