After having visited the commodore-usa website and installed their downloadable Beta OS...i gave it a try in a "regular pc". Its based on a Linux mint distro and looks pretty nice. The question if this has anything to do with the Commodore 64 i used to know from back then... nah..i dont think so.
But, instead of having for a Windows (or other os) based machine for Emulation use, u could also take a look at the Commodore os. I created a small movie running Commodore OS on my pc.
http://www.skateman.nl/2011/11/28/commodore-os-vision-running-on-my-pc/Skateman1972
http://www.skateman.nl