Interesting read. ArsTechnica has an article/review about Microsoft’s Virtual PC, now available free. Why would you want to set up another PC on your existing PC? Check out new operating systems, experiment, play…who knows.
I run a Ubuntu server for the home, on a stand-alone box. The article talks about installing Ubuntu desktop on a PC…takes about 3 hours, but at the end of the day, you’ve got a computer that will run another OS within the windows environment.
Is it better than creating a dual-boot PC? Likely. This way, you don’t really have to work at the hardware layer — formatting and partitioning your HD to support multiple OS. I’m tempted to try it out.