I'm having the same problem with Virtual PC 7.0.2, Windows XP Home Edition, Dragon Naturally Speaking 8, Medical Version. Midway through installation, I get a splash screen saying the "Surgery.cab" for Surgery Cabinet is corrupt and cannot be installed. It then proceeds to uninstall the rest. I have tried this 3 times, with same results. I may *gasp* have to buy a PC laptop just to use this software. Unfortunately, there is no mac equivalent that even comes close to DNS.