Is it possible to move virtual machines to physical machines and vice-versa, using just Microsoft technologies ?

Yes, it is possible.
You have to copy the .vmc file and the .vhd.
Than on the new computer use File/New Machine Wizard and select the .vmc file.
After that in Settings, point to the new location of the .vhd

Thank you for your answer. But, let me explain better what I really want: I'd to migrate an existing virtual machine and migrate its files and configurations into a physical machine. So, in the physical machine, I wont use the Virtual PC or other kink of virtualization.

As far as I know is impossible with VirtualPC. The physical machine will have of course different hardware than the "virtual" hardware of the virtual machine

as mcsjohn said, the physical machine may have different drivers. Acronis http://www.acronis.com/ has what they call Universal Restore. You will have to research if you can do this with virtual machines but I'm pretty sure you can. Create the image of the virtual machine, then restore it onto the Physical computer.  The Universal Restore will allow you to load drivers for the new machine.

I think what a really want is not possible, but the information I receive here help me a lot.