Create virtual PC from real computer (Windows)

There is a nice utility from Microsoft called disk2vhd (http://technet.microsoft.com/en-us/sysinternals/ee656415) that converts disk paritions (or whole disks) to VHD image files. It works for NTFS (Win XP and later) and does not require installation - just download and run. They can be later used inside VirtualBox or other virtual PC engines.