Disabling time synchronization between guest and host in Microsoft Virtual PC
Microsoft Virtual PC synchronizes the time between the guest and host operating systems. This is great until you have the need to set the clock forward or backwards in your VM, as it snaps back to the current time after about 5 seconds. I went hunting through the options in the Virtual PC UI but didn't find anything related to disabling this option. A bit of googling later and I've got it disabled by adding a few lines of XML to the .vmc file.