I just want to track these two great posts on how to set up a virtual private network for hosting one or more virtual machines where you may not have an actual network connection. This happens to me when I’m giving presentations (like my upcoming one at Day of .Net!) and the host and guest machines need to be able to talk to one another, even if the host machine is not on any network.
Windows Virtual PC: Network Between Host and VM Using Loopback Adapter