Given that Virtual PC works fine on OS X (Classic-like operating mode) and given that it is then prone to all the extant Windows viruses, does any one have any experience of the effectiveness of Intego Virus Barrier in covering the VPC as well as X or whether another AV option is preferable? Second question: Does one then expect to download and install various Windows patches and upgrades as they occur, as if it was a Windows only computer? Or even upgrade Windows OS? Is the VPC 'stable', does it need rebooting etc at any different rate to X? Sorry for lots of questions, but I have learned to trust you guys over the resellers or manufacturers in most cases. Thank you, Tony