Basically I have windows vista home premium and windows XP Media Center installed on my computer, so I have dual boot. I am looking for a programme that allows you to switch between a different OS within windows vista so e.g. I can access XP from within Windows Vista just through a third party application. I heard Microsoft Virtual PC 2007 does it but apparently it is not compatible with vista home premium!!. I would appreciate it if anyone would suggest any other bit of software that would do the same job and would be reliable (meaning that they have tested it out themselves) and not just recommend it. Because it took me a quite a bit of time to get dual boot running on my pc and functioning properly (from two separate hard drives) and I do not want to corrupt any of my OS’S.