Jan 22, 2011 ... The older Microsoft Virtual PC 2007 is unable to run when Windows Virtual PC is
installed, and vice versa. ... Your employees are accustomed to Virtual PC 2007,
but you also want Windows XP Mode to work. ... If you don't have the virtual
machine monitor driver installed, you'll just get a big fat error message when
running Virtual PC 2007. ... Follow the instructions provided already (be sure to
enable file extensions to display, so you can change the extension, not just ...