I don't see why you would want to put it on your current desktop? Wouldn't you want to keep your desktop fully functional? Or how about the fact that it would take up 50 times the space a Chrombox would.Instead of the Chromebook, I mean?
Personally, I don't see the point. If you want a desktop version of Chrome OS, can't you just download it to the desktop computer that you already have? I don't get it.